vvEPA
United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
EPA/600/R-96/047B
April 1996
Blind-B Performance
Evaluation Study
A Statistical Evaluation of
the October 17, 1995 Data
D) !f: n if
.n.
MA i
REGULAIiuM DL\iLLUfftrti.MT BRANCH
U.S. EPA. REGION H
U.S. Environmental Protection Agency
Region 5, Library (PL-12J)
77 West Jackson Boulevard, 12tri Floor
Chicago, IL 60604-3590
023RSL96 cov-047B
-------
Blind-B
Performance Evaluation Study
October 17, 1995
Environmental Protection Agency
National Exposure Research Laboratory
Characterization Research Division
Las Vegas, Nevada
U.S. Environmental Protection Agency
Region 5, Library (PI-12J)
77 West Jackson Boulevard, 12th Floor
Chicago, IL 60604-3590
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
CHARACTERIZATION RESEARCH DIVISION-LAS VEGAS
P.O. BOX 93478
LAS VEGAS, NEVADA 89193-3478
(702/798-2100)
Dear Participant,
Enclosed are the results of the Analytical Sciences Branch (CRD-LV)
Performance Evaluation Study for Blind-B; October 17, 1995.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by CRD-LV's Radioche.mistry Laboratory,
and compared to the participating laboratories' grand average.
The expected precision, determined by the known value, was taken from
"Table 3. Laboratory Precision: One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
Please take a few minutes to review this report and the analytical data your
laboratory submitted to us. If there are any apparent discrepancies, please notify us
immediately.
We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.
If you have any questions or comments, please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141.
Sincerely,
George Dilbeck
Team Leader
RADQA Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subjected to the Agency's review,
and has been approved for publication as
an EPA document.
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
1/44
o
o
o
The following pages consist of separate sections for each of the nuclides in this study with four
parts per section. After the first, each part is separated from the next by a new page or a thick
horizontal bar. The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.
The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value. If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.
The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms. The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control. The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late. The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.
The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. If this value is between 2.0 and 3.0, your analytical process precision is in the warning
zone; if it exceeds 3.0 it is out of control. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom. If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.
The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.
The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.
-------
2/44 CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
the range values. The range is the difference between the maximum and minimum results for the
laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
results). The standard error of the range is calculated by multiplying the mean range by 2.575(for
three results), subtracting the mean range from this product, and dividing the result by 3. If the
range is greater than the mean range, then the range analysis is calculated by subtracting the
mean range from the range, dividing the result by the standard error of the range and adding 1.
If the mean range is greater than or equal to the range, then the range analysis is calculated by
dividing the range by the mean range.
The normalized deviation of the mean from the grand average is calculated from the deviation
of the mean from the grand average and the standard error of the mean values. The deviation of
the mean from the grand average is calculated by subtracting the grand average from the
average of the laboratory's three results. The standard error of the mean is calculated by
dividing the expected precision by the square root of 3(the number of results). The normalized
deviation of the mean from the grand average is calculated by dividing the deviation of the mean
from the grand average by the standard error of the mean.
The normalized deviation of the mean from the known value is calculated from the deviation of
the mean from the known value and the standard error of the mean values. The deviation of the
mean from the known value is calculated by subtracting the known value from the average of the
laboratory's three results. The standard error of the mean is calculated by dividing the expected
precision by the square root of 3(the number of results). The normalized deviation of the mean
from the known value is calculated by dividing the deviation of the mean from the known value by
the standard error of the mean.
A complete explanation of the statistical calculations involved in the report may be found in
the Environmental Radioactivity Performance Evaluation Studies Program information brochure
[Draft Revision of EPA-600/4-81-004], available from Patricia Honsa, CRD-LV, 702/798-2141.
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CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
3/44
o
o
Gross Beta Statistical Summary 189 Participants
The known value of this nuclide is 123.5 pCi/1 with an expected precision of 18.5; the control limits
are 91.4 to 155.6; the warning regions are 91.4 to 102.1 and 144.9 to 155.6
38(20.1 %) Failed to respond -%
3(1.6%) Outliers
9
6(3.2 %) Out of control '
but not an outlier
Statistic
131 (69.3 %) Within all limits
Respondents
'11 (5.8 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
124.75 Grand Avg 123.94
34.02 14.60
1157.21 213.06
27.27 11.78
1.01 0.36
0.04 0.03
123.97 123.98
0.38 0.39
0.01 0.03
O
9(6.O %) More than 3 norm. S.D
11 (7.3 %) Between 2 and 3 norm. S.D.
2(54.3 %) Within 1 norm. S.D.
of known value
49(32.5 %) Between 1 and 2 norm. S.D.
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4/44
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Gross Beta "]
Lab
A
AE
AF
AH
AI
AJ
AK
AL
AP
AR
AU
AW
AZ
BA
BB
BC
BG
BH
BK
BL
BM
BN
BO
BS
BW
C
CA
CE
CG
CJ
CK
CM
CO
CP
CQ
cs
ex
D
DB
DD
DE
DG
DI
DL
DM
=
^
Res. 1
127.3
103.3
135.5
122.0
106.7
117.2
124.3
126.8
127.0
145.6
132.0
107.0
133.2
106.1
106.3
145.0
118.7
137.0
125.8
123.6
110.5
131.2
122.6
112.9
125.5
125.7
120.0
134.0
1.0
119.0
133.8
113.0
125.0
125.0
119.6
110.9
104.0
86.9
120.0
151.0
Res. 2
128.1
102.0
125.0
134.0
102.2
104.7
127.9
124.6
132.0
141.8
136.9
104.0
130.4
114.7
105.8
134.0
120.1
140.0
127.3
120.8
105.1
138.5
123.5
114.2
138.3
119.3
120.0
139.0
1.0
117.0
115.6
128.0
125.0
121.0
130.1
111.0
104.0
88.5
125.0
161.0
Res. 3
127.3
102.4
128.6
121.0
98.6
110.5
119.8
126.6
120.0
144.4
131.8
101.0
138.9
110.4
110.6
145.0
127.4
138.0
129.6
117.2
114.2
135.1
125.6
119.2
128.1
126.4
120.0
146.0
1.0
109.0
122.5
115.0
119.0
127.0
127.1
111.0
119.0
85.4
102.0
140.0
No data submitted
Insufficient
data
x =
Exper.
Sigma
0.46
0.67
5.34
7.23
4.06
6.26
4.06
1.22
6.03
1.94
2.89
3.00
4.33
4.30
2.64
6.35
4.67
1.53
1.91
3.21
4.58
3.65
1.54
3.33
6.77
3.91
0.00
6.03
0.00
5.29
9.19
8.14
3.46
3.06
5.41
0.06
8.66
1.55
12.10
10.50
Rng anal
(R + SR)
0.026
0.042
0.335
0.415
0.259
0.399
0.259
0.070
0.383
0.121
0.163
0.192
0.271
0.275
0.153
0.351
0.278
0.096
0.121
0.204
0.291
0.233
0.096
0.201
0.409
0.227
0.000
0.383
0.000
0.319
0.581
0.479
0.192
0.192
0.335
0.003
0.479
0.099
0.734
0.670
Normalized deviation
Average
127.57
102.57
129.70
125.67
102.50
110.80
124.00
126.00
126.33
143.93
133.57
104.00
134.17
110.40
107.57
141.33
122.07
138.33
127.57
120.53
109.93
134.93
123.90
115.43
130.63
123.80
120.00
139.67
1.00
115.00
123.97
118.67
123.00
124.33
125.60
110.97
109.00
86.93
115.67
150.67
TAG SYMBOLS
Determined
to be an outlier
(grand-avg)
0.34
-2.00
0.54
0.16
-2.01
-1.23
0.01
0.19
0.22
1.87
0.90
-1.87
0.96
-1.27
-1.53
1.63
-0.18
1.35
0.34
-0.32
-1.31
1.03
0.00
-0.80
0.63
-0.01
-0.37
1.47
-11.51
-0.84
0.00
-0.49
-0.09
0.04
0.16
-1.21
-1.40
-3.46
-0.77
2.50
IT = Above
$ = Below
(known) Tag
0.38
-1.96
0.58
0.20
-1.97
-1.19
0.05
0.23
0.27
1.91
0.94
-1.83
1.00
-1.23
-1.49
1.67
-0.13
1.39
0.38
-0.28
-1.27
1.07
0.04
-0.76
0.67
0.03
-0.33
1.51
-11.47
-0.80
0.04
-0.45
-0.05
0.08
0.20
-1.17
-1.36
-3.42
-0.73
2.54
control
control
*
*
X
U
limit
limit
-------
o
o
o
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
5/44
Gross Beta
Lab
DO
DS
DT
DZ
E
EB
EL
EO
ER
EV
EX
FJ
FL
FN
FU
FZ
GE
GI
GQ
GT
GZ
HI
HK
HL
HP
HX
I
1C
ID
J
JE
JG
JN
JQ
JS
JX
JY
K
KE
KT
KX
L
LF
LL
Res. 1
112.0
140.0
130.9
127.2
130.2
127.0
139.1
26.0
107.0
103.2
96.0
121.0
128.0
461.9
159.5
110.0
136.6
110.0
116.0
154.1
113.7
120.1
123.8
120.6
146.6
112.6
169.0
160.8
105.0
94.3
112.8
150.0
128.0
140.0
110.0
Res. 2
107.0
141.0
132.7
129.5
130.0
121.0
141.7
25.0
105.0
104.6
93.0
126.0
127.0
447.9
162.9
120.0
136.1
110.0
126.0
147.5
114.5
113.6
122.3
139.1
146.1
113.4
162.9
164.6
94.9
94.3
113.7
161.0
132.0
135.7
130.0
Res. 3
111.0
137.0
139.6
125.1
131.2
110.0
134.6
25.8
106.0
102.3
99.0
104.0
131.0
490.7
163.6
120.0
135.6
110.0
120.0
162.4
111.8
123.3
120.6
135.0
143.8
106.1
162.3
168.2
88.4
100.5
121.0
162.0
127.0
141.6
120.0
s No data submitted
0 s
Insufficient
data
x =
Exper.
Sigma
2.65
2.08
4.59
2.20
0.64
8.62
3.59
0.53
1.00
1.16
3.00
11.53
2.08
21.82
2.19
5.77
0.50
0.00
5.03
7.47
1.39
4.94
1.60
9.72
1.49
4.00
3.71
3.70
8.36
3.58
4.50
6.66
2.65
3.05
10.00
Rng anal
(R + SR)
0.160
0.128
0.278
0.140
0.038
0.543
0.227
0.032
0.064
0.073
0.192
0.702
0.128
1.698
0.131
0.319
0.032
0.000
0.319
0.476
0.086
0.310
0.102
0.591
0.089
0.233
0.214
0.236
0.530
0.198
0.262
0.383
0.160
0.188
0.639
Average
110.00
139.33
134.40
127.27
130.47
119.33
138.47
25,60
106.00
103.37
96.00
117.00
128.67
466.83
162.00
116.67
136.10
110.00
120.67
154.67
113.33
. 119.00
122.23
131.57
145.50
110.70
164.73
164.53
96.10
96.37
115.83
157.67
129.00
139.10
120.00
TAG SYMBOLS
Determined
to be an outlier
Normalized deviation
(grand-avg) (known) Tag
-1.31
1.44
0.98
0.31
0.61
-0.43
1.36
-9.21
-1.68
-1.93
-2.62
-0.65
0.44
32.10
3.56
-0.68
1.14
-1.31
-0.31
2.88
-0.99
-0.46
-0.16
0.71
2.02
-1.24
3.82
3.80
-2.61
-2.58
-0.76
3.16
0.47
1.42
-0.37
ft = Above
Ji = Below
-1.26
1.48
1.02
0.35
0.65
*
-0.39
*
1.40
*
-9.17 X
-1.64
.
-1.88
-2.57
-0.61
,
0.48
32.14 x
3.60 ft
-0.64
1.18
-1.26
-0.27
2.92
-0.95
-0.42
-0.12
0.76
2.06
-1.20
3.86 ft
3.84 ft
*
-2.57
-2.54
-0.72
3.20 ft
0.51
1.46
-0.33
*
control limit
control limit
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C( '-
6/44
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
1
Gross Beta
Lab
LR
LT
M
MA
MF
MP
MQ
MV
MY
N
NA
NH
NJ
NK
NO
NT
0
OF
OS
OX
OY
OZ
P
PA
PB
PG
PI
PM
PQ
PR
PV
PW
Q
QC
QJ
QP
QQ
QT
QU
QW
QX
QZ
RD
RF
RG
=
0 =
V
Res. 1
124.0
119.0
117.0
122.0
107.5
135.0
143.0
112.3
150.5
123.0
126.8
146.0
112.0
126.5
117.2
144.0
146.2
134.2
104.0
141.9
140.3
127.4
131.0
124.0
135.7
98.6
114.4
134.6
121.0
106.4
117.9
112.8
115.9
125.4
126.8
118.4
125.5
136.0
Res. 2
105.0
122.0
119.0
107.0
106.3
137.0
134.0
111.9
145.1
105.0
122.2
141.0
119.0
126.7
119.0
139.0
142.0
135.8
104.0
144.0
132.9
129.6
128.9
136.8
126.2
97.4
130.9
130.1
130.0
117.6
118.5
134.1
115.5
123.5
125.7
119.1
122.3
126.0
Res. 3
113.0
124.0
119.0
92.0
108.1
136.0
142.0
96.0
124.7
134.0
118.9
142.0
122.0
126.6
116.9
125.0
145.0
131.2
104.0
143.8
132.8
128.8
130.7
126.3
134.0
96.2
127.3
136.4
133.0
' 125.7
119.9
122.1
109.2
123.1
122.4
118.3
128.6
133.0
No data submitted
Insufficient
data
X ~
Exper.
Sigma
9.54
2.52
1.15
15.00
0.92
1.00
4.93
9.30
13.61
14.64
3.97
2.65
5.13
0.11
1.14
9.85
2.16
2.33
0.00
1.16
4.30
1.11
1.14
6.82
5.07
1.20
8.68
3.25
6.24
9.69
1.03
10.68
3.76
1.23
2.29
0.43
3.15
5.13
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.607
0.160
0.064
0.958
0.057
0.064
0.287
0.520
0.824
0.926
0.252
0.160
0.319
0.006
0.067
0.607
0.134
0.147
0.000
0.067
0.239
0.070
0.067
0.409
0.303
0.077
0.527
0.201
0.383
0.616
0.064
0.680
0.214
0.073
0.140
0.026
0.201
0.319
114.00
121.67
118.33
107.00
107.30
136.00
139.67
106.73
140.10
120.67
122.63
143.00
117.67
126.60
117.70
136.00
144.40
133.73
104.00
143.23
135.33
128.60
130.20
129.03
131.97
97.40
124.20
133.70
128.00
116.57
118.77
123.00
113.53
124.00
124.97
118.60
125.47
131.67
TAG SYMBOLS
Determined
to be an
outlier
-0.93
-0.21
-0.52
-1.59
-1.56
1.13
1.47
-1.61
1.51
-0.31
-a. 12
1.78
-0.59
0.25
-0.58
1.13
1.92
0.92
-1.87
*
1.81
1.07
0.44
0.59
0.48
0.75
-2.48
0.02
0.91
0.38
-0.69
-0.48
-0.09
-0.97
0.01
0.10
-0.50
0.14
0.72
ft = Above
11 = Below
-0.89
-0.17
-0.48
-1.54
-1.52
1.17
1.51
-1.57
1.55
-0.27
-0.08
1.83
-0.55
0.29
-0.54
1.17
1.96
0.96
-1.83
1.85
1.11
0.48
0.63
0.52
0.79
-2.44
0.07
0.95
0.42
-0.65
-0.44
-0.05
-0.93
0.05
0.14
-0.46
0.18
0.76
control
control
*
*
*
»
*
limit
limit J
-------
o
o
o
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Gross Beta
Lab
RK
RP
RR
RU
RV
RZ
S
sc
SD
SF
SI
SL
SM
SN
SO
SR
ss
ST
sx
sz
T
TD
TG
TH
H
TJ
TL
TN
TQ
TS
TY
U
UA
UE
UK
UN
UP
UQ
uw
UY
VA
VC
VG
VH
VI
=
0 3
Res. 1
104.8
130.0
132.8
128.4
123.1
124.1
136.6
111.0
118.0
100.0
126.8
125.4
114.0
109.3
130.4
109.1
127.0
117.0
92.9
135.8
133.5
131.4
116.0
137.6
121.0
121.0
101.0
142.0
133.2
136.1
127.2
101.1
99.0
Res. 2
105.9
111.0
126.5
128.4
128.0
126.6
138.4
106.0
123.0
94.6
119.9
119.1
106.7
106.6
135.2
112.5
124.9
130.0
88.6
136.8
134.1
139.3
116.0
148.4
118.0
111.7
103.0
135.0
131.8
137.2
129.2
97.9
90.0
Res. 3
89.7
117.0
127.4
114.8
128.4
127.7
137.4
111.0
120.0
113.7
119.6
118.0
104.8
104.7
125.9
118.1
119.4
134.0
91.1
137.2
128.7
129.2
124.0
146.5
119.0
126.2
100.0
144.0
127.1
139.2
122.1
111.9
102.0
No data submitted
Insufficient
data
x =
Exper.
Sigma
9.05
9.71
3.41
7.85
2.95
1.85
0.90
2.89
2.52
9.85
4.07
3.99
4.86
2.31
4.65
4.54
3.92
8.89
2.16
0.72
2.96
5.31
4.62
5.77
1.53
7.35
1.53
4.73
3.20
1.57
3.66
7.34
6.24
Rng anal
(R + SR) Average
0.517
0.607
0.201
0.434
0.169
0.115
0.057
0.160
0.160
0.610
0.230
0.236
0.294
0.147
0.297
0.287
0.243
0.543
0.137
0.045
0.172
0.322
0.255
0.345
0.096
0.463
0.096
0.287
0.195
0.099
0.227
0.447
0.383
100.13
119.33
128.90
123.87
126.50
126.13
137.47
109.33
120.33
102.77
122.10
120.83
108.50
106.87
130.50
113.23
123.77
127.00
90.87
136.60
132.10
133.30
118.67
144.17
119.33
119.63
101.33
140.33
130.70
137.50
126.17
103.63
97.00
TAG SYMBOLS
Determined
to be an
outlier
7/44
Normalized deviation
(grand-avg)
-2.23
-0.43
0.46
-0.01
0.24
0.21
1.27
-1.37
-0.34
-1.98
-0.17
-0.29
-1.45
-1.60
0.61
-1.00
-0.02
0.29
-3.10
1.19
0.76
0.88
-0.49
1.89
-0.43
-0.40
-2.12
1.53
0.63
1.27
0.21
-1.90
-2.52
ft = Above
11 = Below
(known) Tag
-2.19
,
. ,
-0.39
«
0.51
0.03
0.28
0.25
1.31
-1.33
-0.30
-1.94
-0.13
-0.25
-1.40
-1.56
«
0.66
-0.96
0.02
0.33
-3.06 11
1.23
*
,
0.81
0.92
-0.45
1.93
-0.39
-0.36
-2.08
*
1.58
0.67
1.31
0.25
«
*
-1.86
-2.48
control limit
control limit
-------
1
[8/44 CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Gross Beta
Lab Res. 1 Res. 2
VJ
VM
VO 130.0 142.0
VT
W 125.0 123.0
WE 141.2 140.0
WF 136.0 143.0
WO
X 158.7 134.3
MMHMMHM
Exper.
Res. 3 Sigma
154.0 12.00
127.0 2.00
130.7 5.75
148.0 6.03
143.2 12.35
^^H
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known)
0.766 142.00 1.69 1.73
0.128 125.00 0.10 0.14
0.335 137.30 1.25 1.29
0.383 142.33 1.72 1.76
0.779 145.40 2.01 2.05
^^^M.^^.^--^,^--
Tag
*
^^B
^^^^^^^^^^^^^^^^^^^^^^^^I^^^^^^MBi^^^^^
Data sorted by Laboratory Average
Average Tag
1.00 x
25.60 x
86.93 U
90.87 U
96.00
96.10
96.37
97.00
97.40
100.13
101.33
102.50
102.57
102.77
103.37
103.63
104.00
104.00
106.00
106.73
106.87
107.00
107.30
107.57
108.50
109.00
109.33
109.93
110.00
110.00
110.40
110.70
110.80
s No data submitted
0 s Insufficient data
Lab
CO
FJ
DI
TG
FZ
JY
K
VI
PR
RK
UA
AJ
AE
SM
FU
VH
OY
AZ
FL
MY
ss
MA
MF
BC
SR
DG
SI
BO
HL
DS
BB
JN
AK
Average
110.97
113.23
113.33
113.53
114.00
115.00
115.43
115.67
115.83
116.57
116.67
117.00
117.67
117.70
118.33
118.60
118.67
118.67
118.77
119.00
119.33
119.33
119.33
119.63
120.00
120.00
120.33
120.53
120.67
120.67
120.83
121.67
122.07
Tag Lab
DE
SZ
1C
QU
LR
CQ
CA
DL
KE
QP
ffl
GE
NO
O
M
QZ
TQ
CX
QQ
ID
TY
RU
EO
U
LF
CJ
SL
BN
NH
HP
SO
LT
BH
Average Tag
122.10
122.23
122.63
123.00
123.00
123.77
123.80
123.87
123.90
123.97
124.00
124.00
124.20
124.33
124.97
125.00
125.47
125.60
125.67
126.00
126.13
126.17
126.33
126.50
126.60
127.00
127.27
127.57
127.57
128.00
128.60
128.67
128.90
T,ab
SN
J
NJ
QT
D
T
CG
S
c
cs
QW
AL
PV
DB
QX
W
RD
DD
AH
AP
SD
UY
AR
SC
NT
TD
E
BM
A
QJ
PB
GQ
RZ
TAG SYMBOLS IT s Above control limit
x = Determined
to be an outlier !) = Below control limit
-------
o
o
o
r =- "
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Gross Beta
Average Tag
129.00
129.03
129.70
130.20
130.47
130.50
130.63
130.70
131.57
131.67
131.97
132.10
133.30
133.57
133.70
133.73
134.17
% responding labs
-6 -4
% responding labs
in
-6 -4
= No data submitted
t 0 s Insufficient data
Data sorted by Laboratory Average
Lab
KX
PM
AF
PG
EB
SX
CE
UP
JE
RG
PQ
TL
TN
AW
Q
ox
BA
Average Tag Lab
134.40 DZ
134.93 BS
135.33 PA
136.00 OF
136.00 MQ
136.10 HK
136.60 TH
137.30 WE
137.47 SF
137.50 UW
138.33 BK
138.47 EV
139.10 L
139.33 DT
139.67 MV
139.67 CK
140.10 NA
Average Tag
140.33
141.33
142.00
142.33
143.00
143.23
143.93
144.17
144.40
145.40
145.50
' 150.67
154.67
157.67 ft
162.00 ft
164.53 ft
164.73 ft
466.83 x
Frequency distribution
- -
-_!. Illlllillliii
T "2 T I T "2 T +4
Normalized deviation of the mean from the known value
Frequency distribution
Kll.
flllllll.l.
-2 0 +2 +4
Normalized deviation of the mean from the grand average
TAG SYMBOLS IT = Above control
x = Determined to be an outlier U- s Below control
9/44
Lab
UN
BG
VO
WF
NK
P
AU
TS
OS
X
JG
DM
I
KT
GZ
JS
JQ
GT
+6
+6
limit
limit
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
10/44
o
o
o
Strontium-89 Statistical Summary 189 Participants
The known value of this nuclide is 20.0 pCi/1 with an expected precision of 5.0; the control limits
are 11.3 to 28.7; the.warning regions are 11.3 to 14.2 and 25.8 to 28.7
111 (58.7 %) Failed to respond .
1(O.5 %) Outliers
1 (O.5 %) Out of control
but not an outlier
Statistic
; 69(36.5 %) Within all limits
Respondents
7(3.7 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
%Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
19.87
4.37
19.10
22.00
-0.66
-0.03
19.67
-1.67
-0.08
Grand Avg 19.58
3.58
12.82
18.29
-2.10
-0.12
19.67
-1.67
-0.09
2(2.6 %) More than 3 norm. S.D. -.
7(9.0 %) Between 2 and 3 norm. S.D.
43(55.1 %) Within 1 norm. S.D.
of known value
26(33.3 %) Between 1 and 2 norm. S.D.
-------
11/44
t
CRD-LV
Performance Evaluation: Blind-B, 17-Oct-1995
Strontium-89 "]
Lab
A
AE
AT
AH
AI
AJ
AK
AL
AP
AR
AU
\W
AZ
BA
BB
BC
BG
BH
BK
BL
BM
BN
BO
BS
BW
C
CA
CE
CG
CJ
CK
CM
CO
CP
CQ
cs
ex
D
DB
DD
DE
DG
DI
DL
DM
=
( 0 =
V:
Res. 1
20.0
24.0
22.0
21.0
15.0
18.0
41.0
18.0
20.0
25.0
18.0
26.0
24.0
24.0
21.0
20.0
20.0
22.0
20.0
17.0
28.0
18.0
18.0
21.0
21.0
22.0
21.0
Res. 2
20.0
24.0
19.0
21.0
17.0
21.0
42.0
17.0
21.0
21.0
16.0
26.0
21.0
25.0
20.0
22.0
17.0
22.0
22.0
18.0
31.0
18.0
18.0
27.0
21.0
22.0
24.0
Res. 3
19.0
27.0
19.0
17.0
15.0
22.0
43.0
18.0
22.0
23.0
16.0
24.0
20.0
28.0
20.0
20.0
20.0
20.0
20.0
18.0
32.0
17.0
18.0
22.0
21.0
23.0
21.0
No data submitted
Insufficient
data
X s
Exper.
Sigma
0.58
1.73
1.73
2.31
1.15
2.08
1.00
0.58
1.00
2.00
1.15
1.15
2.08
2.08
0.58
1.15
1.73
1.15
1.15
0.58
2.08
0.58
0.00
3.21
0.00
0.58
1.73
Rng anal
(R + SR) Average
0.118
0.354
0.354
0.473
0.236
0.473
0.236
0.118
0.236
0.473
0.236
0.236
0.473
0.473
0.118
0.236
0.354
0.236
0.236
0.118
0.473
0.118
0.000
0.709
0.000
0.118
0.354
19.67
25.00
20.00
-
19.67
15.67
20.33
42.00
17.67
21.00
23.00
16.67
25.33
21.67
25.67
20.33
20.67
19.00
21.33
20.67
17.67
30.33
17.67
18.00
23.33
21.00
22.33
22.00
TAG SYMBOLS
Determined
to be an
outlier
Normalized deviation
(grand-avg) (known) Tag
0.03
1.88
0.15
0.03
-1.36
0.26
7;77
-0.66
0.49
1.18
-1.01
1.99
0.72
2.11
0.26
0.38
-0.20
0.61
0.38
-0.66
3.73
-0.66
-0.55
1.30
0.49
0.95
0.84
ft = Above
11 s Below
-0.12
1.73
0.00
-0.12
-1.50
0.12
7.62
-0.81
0.35
1.04
-1.15
1.85
0.58
1.96
0.12
0.23
-0.35
0.46
0.23
-0.81
3.58
-0.81
-0.69
1.15
0.35
0.81
0.69
control
control
*
*
X
»
*
*
«
*
*
ft
limit
limit I
-V
-------
o
o
o
L_
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
12/44
Strontium-89
Lab
DO
DS
DT
DZ
E
EB
EL
EO
ER
EV
EX
FF
FJ
FL
FN
FU
FZ
GE
GI
GQ
GT
GZ
m
HK
HL
HP
HX
I
1C
ID
J
JE
JG
JN
JQ
JS
JX
JY
K
KE
KT
KX
L
LF
LL
=
0 s
Res. 1
19.0
18.0
21.0
18.0
20.0
23.0
21.0
18.0
18.0
17.0
22.0
20.0
19.0
20.0
14.0
20.0
17.0
26.0
16.0
22.0
Res. 2
18.0
19.0
21.0
18.0
25.0
24.0
21.0
18.0
17.0
16.0
26.0
21.0
18.0
21.0
14.0
24.0
18.0
23.0
18.0
19.0
Res. 3
21.0
19.0
20.0
21.0
17.0
23.0
21.0
20.0
18.0
16.0
25.0
21.0
18.0
21.0
13.0
25.0
19.0
24.0
13.0
21.0
No data submitted
Insufficient
data
X E=
Exper.
Sigma
1.53
0.58
0.58
1.73
4.04
0.58
0.00
1.15
0.58
0.58
2.08
0.58
0.58
0.58
0.58
2.65
1.00
1.53
2.52
1.53
Rng anal
(R + SR)
0.354
0.118
0.118
0.354
0.945
0.118
0.000
0.236
0.118
0.118
0.473
0.118
0.118
0.118
0.118
0.591
0.236
0.354
0.591
0.354
Average
19.33
18.67
20.67
19.00
20.67
23.33
21.00
18.67
17.67
16.33
24.33
20.67
18.33
20.67
13.67
23.00
18.00
24.33
15.67
20.67
TAG SYMBOLS
Determined
to be an outlier
Normalized deviation
(grand-avg) (known) Tag
-0.09
-0.32
0.38
-0.20
0.38
1.30
0.49
-0.32
-0.66
-1.12
1.65
0.38
-0.43
0.38
-2.05
1.18
-0.55
1.65
-1.36
0.38
ft = Above
U- = Below
-0.23
,
-0.46
0.23
-0.35
0.23
1.15
*
. *
.
,
0.35
-0.46
*
*
-0.81
*
*
-1.27
*
1.50
*
0.23
-0.58
*
0.23
-2.19
*
*
1.04
*
-0.69
1.50
*
-1.50
0.23
,
*
control limit
control limit
-------
13/44
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Strontium-89
Lab
Res. 1
Exper. Rng anal Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
LR
LT
M
MA
MF
MP
MQ
MV
MY
N
NA
NH
NJ
NK
NO
NT
O
OF
OS
OX
OY
OZ
P
PA
PB
PG
PI
PM
PR
PV
PW
Q
QC
QJ
QP
QQ
QT
QU
QW
QX
QZ
RD
RF
RG
22.0
17.0
23.0
29.0
19.0
20.0
15.0
19.0
14.0
14.0
19.0
21.0
18.0
18.0
28.0
20.0
19.0
11.0
20.0
16.0
16.0
17.0
24.0
19.0
18.0
26.0
22.0
20.0
14.0
23.0
15.0
14.0
19.0
1.53
1.00
0.58
2.08
2.08
1.00
1.15
0.354
0.236
2.89 0.591
1.53 0.354
1.53 0.354
0.118
0.473
0.473
0.236
0.236
1.15 0.236
22.33
18.00
19.67
27.67
20.33
19.67
13.33
20.67
15.00
14.67
0.95
-0.55
2.80
0.26
0.03
-2.16
0.38
-1.59
-1.70
18.33 -0.43
0.81
-0.69
0.03 -0.12
2.66
0.12
-0.12
-2.31
0.23
-1.73
-1.85
-0.58
*
*
*
*
s No data submitted
0 = Insufficient data
TAG SYMBOLS
x s Determined to be an outlier
IT s Above control limit
II = Below control limit
-------
o
o
o
Sti-ontium-89
Lab Res. 1
RK
RP
RR
RU
RV
RZ
S
sc
SD
SF
SI
SL
SM
SN
SO
SR
ss
ST
sx
sz
T
TD
TG
TH
TI
TJ
TL
TN
TQ
TS
TY
U
UA
UE
UK
UN
UP
UQ
uw
UY
VA
VC
VG
VH
VI
5
0.
19.0
23.0
13.0
15.0
19.0
28.0
16.0
21.0
22.0
16.0
19.0
15.0
16.0
16.0
15.0
17.0
19.0
CRD-LV
Res. 2
18.0
25.0
17.0
16.0
20.0
26.0
14.0
20.0
25.0
17.0
20.0
14.0
17.0
16.0
14.0
18.0
8.0
Performance Evaluation: Blind-B, 17-Oct-1995
Res. 3
18.0
23.0
13.0
20.0
21.0
24.0
17.0
21.0
34.0
17.0
20.0
15.0
18.0
13.0
15.0
16.0
11.0
No data submitted
Insufficient
data
x =
Exper.
Sigma
0.58
1.15
2.31
2.65
1.00
2.00
1.53
0.58
6.24
0.58
0.58
0.58
1.00
1.73
0.58
1.00
5.69
Rng anal
(R + SR) Average
0.118
0.236
0.473
0.591
0.236
0.473
0.354
0.118
1.795
0.118
0.118
0.118
0.236
0.354
0.118
0.236
1.570
18.33
23.67
14.33
17.00
20.00
26.00
15.67
20.67
27.00
16.67
19.67
14.67
17.00
15.00
14.67
17.00
12.67
TAG SYMBOLS
Determined
to be an
outlier
14/44
Normalized deviation
(grand-avg) (known) Tag
-0.43
1.42
-1.82
-0.89
0.15
2.22
-1.36
0.38
2.57
-1.01
0.03
-1.70
-0.89
-1.59
-1.70
-0.89
-2.39
ft = Above
11 s Below
*
-0.58
1.27
-1.96
-1.04
0.00
2.08
*
-1.50
*
0.23
2.42
*
*
-1.15
-0.12
*
-1.85
*
*
-1.04
»
-1.73
-1.85
-1.04
*
*
*
-2.54
control limit
control limit
-------
15/44 CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Strontium-89
Lab Res. 1 Res. 2
VJ
VM
VO
VT
W 16.0 19.0
WE
WF 14.0 16.0
WO
X 16.0 15.0
Exper.
Res. 3 Sigma
20.0 2.08
16.0 1.15
11.0 2.65
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known)
0.473 18.33 -0.43 -0.58
0.236 15.33 -1.47 -1.62
0.591 14.00 -1.93 -2.08
Tag
*
*
»
Data sorted by Laboratory Average
Average Tag
12.67
13.33
13.67
14.00
14.33
14.67
14.67
14.67
15.00
15.00
15.33
15.67
15.67
15.67
16.33
16.67
16.67
17.00
17.00
17.00
17.67
17.67
17.67
17.67
18.00
18.00
= No data submitted
0 = Insufficient data
V-
Lab Average
VI 18.00
PV 18.33
JE 18.33
X 18.33
SD 18.33
UP 18.67
TQ 18.67
QW 19.00
UN 19.00
QU 19.33
WF 19.67
SS 19.67
KX 19.67
AK 19.67
HK 19.67
TI 20.00
BC 20.00
UW 20.33
U 20.33
SF 20.33
GQ 20.67
CQ 20.67
CK 20.67
AW 20.67
M 20.67
JY 20.67
Tag Lab
CS
W
s
QZ
1C
FZ
DT
E
CA
DO
TL
PB
MQ
AJ
A
SI
AF
NT
BO
AL
T
Q
L
J
I
EB
Average Tag
20.67
20.67
20.67
21.00
21.00
21.00
21.33
21.67
22.00
22.33
22.33
23.00
23.00
23.33
23.33
23.67
24.33
24.33
25.00
25.33
25.67
26.00
27.00
27.67
30.33 ft
42.00 x
TAG SYMBOLS ft = Above control
x s Determined to be an outlier U = Below control
Lab
DZ
CJ
C
FU
DD
AZ
CG
BL
DG
LT
DE
JS
BA
EL
CX
sc
K
HP
AE
BH
BM
SM
TD
NJ
CP
AU
limit
limit
s
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
16/44
o
Strontium-89
% responding labs
Frequency distribution
10
-6
lit.
-4 -2 0 +2 +4
Normalized deviation of the mean from the known value
I T
% responding labs
Frequency distribution
10-
-- JlL j
lll
-6
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
i I
4-6
o
o
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
17/44
o
o
o
Strontium-90
Statistical Summarv
189 Participants
The known value of this nuclide is 10.0 pCi/1 with an expected precision of 5.0; the control limits
are 1.3 to 18.7; the warning regions are 1.3 to 4.2 and 15.8 to 18.7
104(55.0 %) Failed to respond
1(0.5%) Outliers
Statistic
81(42.9 %) Within all limits
3(1
Respondents
.6 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
%Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
10.33
2.40
5.77
23.25
3.33
0.14
10.00
0.00
0.00
Grand Avg 10.18
1.97
3.88
19.35
1.83
0.09
10.00
0.00
0.00
1(1.2 %) More than 3 norm. S.D. -,
3(3.5 %) Between 2 and 3 norm. S.D. '
. 76(89.4 %) Within 1 norm. S.D.
of known value
5(5.9 %) Between 1 and 2 norm. S.D.
-------
18/44
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
. - . _ _^
Strontium-90
Lab
A
AE
AF
AH
AI
AJ
AK
AL
AP
AR
AU
AW
AZ
BA
BB
BC
BG
BH
BK
BL
BM
BN
BO
BS
BW
C
CA
CE
CG
CJ
CK
CM
CO
CP
CQ
CS
CX
D
DB
DD
DE
DG
DI
DL
DM
Res. 1
9.0
13.0
9.0
8.0
12.0
10.0
17.0
12.0
11.0
10.0
10.0
10.0
10.0
9.0
7.0
9.0
10.0
10.0
11.0
10.0
12.0
9.0
13.0
9.0
9.0
9.0
23.0
11.0
10.0
10.0
8.0
Res. 2
9.0
15.0
9.0
8.0
12.0
10.0
13.0
13.0
11.0
10.0
10.0
10.0
8.0
10.0
8.0
9.0
10.0
11.0
11.0
10.0
11.0
9.0
12.0
11.0
9.0
10.0
24.0
8.0
10.0
11.0
9.0
Res. 3
9.0
16.0
9.0
10.0
13.0
10.0
19.0
14.0
11.0
9.0
10.0
10.0
11.0
10.0
8.0
11.0
10.0
10.0
10.0
10.0
12.0
10.0
13.0
11.0
8.0
11.0
22.0
11.0
10.0
11.0
8.0
= No data submitted
0 3
V>
Insufficient
data
x =
Exper.
Sigma
0.00
1.53
0.00
1.15
0.58
0.00
3.06
1.00
0.00
0.58
0.00
0.00
1.53
0.58
0.58
1.15
0.00
0.58
0.58
0.00
0.58
0.58
0.58
1.15
0.58
1.00
1.00
1.73
0.00
0.58
0.58
Rng anal
(R + SR)
0.000
0.354
0.000
0.236
0.118
0.000
0.709
0.236
0.000
0.118
0.000
0.000
0.354
0.118
0.118
0.236
0.000
0.118
0.118
0.000
0.118
0.118
0.118
0.236
0.118
0.236
0.236
0.354
0.000
0.118
0.118
Normalized deviation
Average
9.00
14.67
9.00
8.67
12.33
10.00
16.33
13.00
11.00
9.67
10.00
10.00
9.67
9.67
7.67
9.67
10.00
10.33
10.67
10.00
11.67
9.33
12.67
10.33
8.67
10.00
23.00
10.00
10.00
10.67
8.33
-
TAG SYMBOLS
Determined
to be an outlier
(grand-avg) (known) Tag
-0.41
1.55
-0.41
-0.53
0.75
-0.06
2.13
0.98
0.28
-0.18
-0.06
-0.06
-0.18
-0.18
-0.87
-0.18
-0.06
0.05
0.17
-0.06
0.51
-0.29
0.86
0.05
-0.53
-0.06
4.44
-0.06
-0.06
0.17
-0.64
ft s Above
H = Below
-0.35
1.62
-0.35
*
-0.46
0.81
0.00
*
*
2.19
1.04
0.35
-0.12
0.00
0.00
-0.12
-0.12
-0.81
-0.12
0.00
*
0.12
0.23
0.00
0.58
-0.23
0.92
*
0.12
-0.46
0.00
4.50 X
0.00
0.00
0.23
-0.58
*
control limit
control limit
-------
o
o
o
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Strontium-90
Lab Res. 1
DO
DS
DT
DZ
E
EB
EL
EO
ER
EV
EX
FF
FJ
FL
FN
FU
FZ
GE
GI
GQ
GT
GZ
HI
HK
HL
HP
HX
I
1C
ID
J
JE
JG
JN
JQ
JS
JX
JY
K
KE
KT
KX
L
LF
LL
9.0
12.0
10.0
12.0
10.0
11.0
9.0
8.0
8.0
9.0
12.0
10.0
8.0
12.0
6.0
9.0
10.0
9.0
9.0
9.0
Res. 2
1 9.0
10.0
10.0
13.0
8.0
9.0
9.0
9.0
8.0
9.0
10.0
10.0
10.0
11.0
8.0
8.0
10.0
10.0
10.0
9.0
Res. 3
8.0
10.0
10.0
13.0
10.0
9.0
9.0
9.0
8.0
9.0
11.0
10.0
10.0
11.0
9.0
9.0
11.0
10.0
11.0
9.0
s No data submitted
0 a
Insufficient
data
x =
Exper.
Sigma
0.58
1.15
0.00
0.58
1.15
1.15
0.00
0.58
0.00
0.00
1.00
0.00
1.15
0.58
1.53
0.58
0.58
0.58
1.00
0.00
19/44
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.118
0.236
0.000
0.118
0.236
0.236
0.000
0.118
0.000
0.000
0.236
0.000
0.236
0.118
0.354
0.118
0.118
0.118
0.236
0.000
-
8.67
10.67
10.00
12.67
9.33
9.67
"
9.00
8.67
8.00
9.00
11.00
10.00
9.33
11.33
7.67
8.67
10.33
9.67
10.00
9.00
TAG SYMBOLS
Determined
to be an
outlier
-0.53
0.17
-0.06
0.86
-0.29
-0.18
-0.41
-0.53
-0.76
-0.41
0.28
-0.06
-0.29
0.40
-0.87
-0.53
0.05
-0.18
-0.06
-0.41
ft = Above
U = Below
-0.46
0.23
0.00
0.92
-0.23
-0.12
*
*
. . .. ,
*
*
-0.35
-0.46
*
-0.69
*
-0.35
0.35
0.00
-0.23
*
0.46
-0.81
*
*
-0.46
«
0.12
-0.12
*
0.00
-0.35
control limit
control limit
-------
20/44
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Strontium-90
Lab Res. 1
Exper. Rng anal Normalized deviation
Res. 2 Res. 3 Sigma (R + SR) Average (grand-avg) (known) Tag
LR
LT
M
MA
MF
MP
MQ
MV
MY
N
NA
NH
NJ
NK
NO
NT
O
OF
OS
OX
OY
OZ
P
PA
PB
PG
PI
PM
PQ
PR
PV
PW
Q
QC
QJ
QP
QQ
QT
QU
QW
QX
QZ
RD
RF
RG
12.0
15.0
7.0
7.0
10.0
10.0
4.0
11.0
9.0
9.0
9.0
7.0
13.0
15.0
10.0
8.0
10.0
11.0
6.0
11.0
8.0
8.0
8.0
8.0
11.0
18.0
10.0
8.0
10.0
10.0
8.0
12.0
9.0
8.0
8.0
8.0
1.00
1.73
0.58
0.58
0.58
0.58
0.58
0.236
0.354
1.73 0.354
0.58 0.118
0.00 0.000
0.118
2.00 0.473
0.58 0.118
0.118
0.118
0.118
0.118
12.00
16.00
10.33
6.00
11.33
8.67
8.33
8.33
7.67
0.63
2.02
9.00 -0.41
7.67 -0.87
10.00 -0.06
0.05
-1.45
0.40
-0.53
-0.64
-0.64
-0.87
0.69
2.08
-0.35
-0.81
0.00
0.12
-1.39
0.46
-0.46
-0.58
-0.58
-0.81
*
*
*
*
*
*
= No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft s Above control limit
U- = Below control limit
-------
o
o
o
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Strontium-90
Lab Res. 1
RK
RP
RR
RU
RV
RZ
S
sc
SD
SF
SI
SL
SM
SN
SO
SB
ss
8T
SX
sz
T
TD
TG
TH
TI
TJ
TL
TN
TQ
TS
TY
U
UA
UE
UK
UN
UP
UQ
uw
UY
VA
VC
VG
VH
VI
10.0
12.0
10.0
15.0
9.0
11.0
11.0
10.0
10.0
10.0
9.0
12.0
9.0
10.0
11.0
10.0
8.0
8.0
Res. 2
10.0
12.0
8.0
15.0
9.0
11.0
12.0
11.0
9.0
11.0
10.0
10.0
9.0
10.0
10.0
10.0
10.0
9.0
Res. 3
*
10.0
11.0
10.0
13.0
8.0
12.0
11.0
11.0
9.0
8.0
9.0
11.0
9.0
9.0
11.0
10.0
9.0
7.0
s No data submitted
|0 =
Insufficient
data
x =
Exper.
Sigma
0.00
0.58
1.15
1.15
0.58
0.58
0.58
0.58
0.58
1.53
0.58
1.00
0.00
0.58
0.58
0.00
1.00
1.00
21/44
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.000
0.118
0.236
0.236
0,118
0.118
0.118
0.118
0.118
0.354
0.118
0.236
0.000
0.118
0.118
0.000
0.236
0.236
10.00
11.67
9.33
14.33
8.67
11.33
11.33
10.67
9.33
9.67
9.33
11.00
9.00
9.67
10.67
10.00
9.00
8.00
TAG SYMBOLS
Determined
to be an
outlier
-0.06
0.51
-0.29
1.44
-0.53
0.40
0.40
0.17
-0.29
-0.18
-0.29
0.28
-0.41
-0.18
0.17
-0.06
-0.41
-0.76
ft = Above
li = Below
*
0.00
0.58
-0.23
1.50
-0.46
0.46
*
0.46
0.23
-0.23
-0.12
*
«
-0.23
0.35
-0.35
«
*
-0.12
*
0.23
0.00
*
-0.35
*
*
«
-0.69
control limit
control limit
-------
22/44 CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Strontium-90
Lab Res. 1 Res. 2
VJ
VM
VO 8.0 12.0
VT
W 10.0 9.0
WE
WF 18.0 17.0
WO
X 14.0 14.0
Exper. Rng anal
Res. 3 Sigma (R + SR)
9.0 2.08 0.473
9.0 0.58 0.118
17.0 0.58 0.118
17.0 1.73 0.354
1
Normalized deviation
Average (grand-avg) (known) Tag
9.67 -0.18 -0.12
9.33 -0.29 -0.23
17.33 2.48 2.54
15.00 1.67 1.73
«
*
»
^^^^fe
Data sorted by Laboratory Average
Average Tag
6.00
7.67
7.67
7.67
7.67
8.00
8.00
8.33
8.33
8.33
8.67
8.67
8.67
8.67
8.67
8.67
8.67
9.00
9.00
9.00
9.00
9.00
9.00
9.00
9.00
9.33
9.33
9.33
= No data submitted
0 = Insufficient data
Lab Average Tag
PV 9.33
QZ 9.33
NJ 9.33
JE 9.33
BL 9.67
VI 9.67
GQ 9.67
QW 9.67
QU 9.67
DG 9.67
SI 9.67
QJ 9.67
JS 9.67
FZ 10.00
DO 10.00
CP 10.00
AJ 10.00
UW 10.00
TQ 10.00
MQ 10.00
L 10.00
HK 10.00
FU 10.00
AF 10.00
A 10.00
W 10.00
TI 10.00
T 10.33
TAG SYMBOLS
Lab Average Tag
SD 10.33
1C 10.33
EB 10.33
CJ 10.67
VO 10.67
U 10.67
TD 10.67
K 10.67
EL 11.00
BM 11.00
BH 11.00
BG 11.33
BA 11.33
UP 11.33
S 11.33
NT 11.67
KX 11.67
I 12.00
DZ 12.33
DD 12.67
CX 12.67
CQ 13.00
CE 14.33
BO 14.67
BC 15.00
BB 16.00
AL 16.33
PB 17.33
23.00 x
ft 3 Above control
x = Determined to be an outlier II = Below control
Lab
JY
CO
C
UN
SZ
DT
DE
CA
TL
HP
AZ
SS
SM
Q
J
sc
CG
LT
AK
E
CK
AW
SF
AE
X
M
AU
WF
CS
limit
limit I
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
23/44
o
o
o
Strontium-90
% responding labs
Frequency distribution
20 -I
10-
Illllll,., .
-6
% responding labs
-4 -20 +2 +4
Normalized deviation of the mean from the known value
Frequency distribution
20
10
0-«T-
-6
-4 -2 0 +2 +4
Normalized deviation of the mean from the grand average
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
24/44
o
o
o
Cobalt-60
Statistical Summary
189 Participants
The known value of this nuclide is 49.0 pCi/1 with an expected precision of 5.0; the control limits
are 40.3 to 57.7; the warning regions are 40.3 to 43.2 and 54.8 to 57.7
6O(31.7 %) Failed to respond %
13(6.9%) Outliers
Statistic
111 (58.7 %) Within all limits
Respondents
"-- 5(2.6 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
%Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
49.96
9.73
94.67
19.48
1.96
0.10
49.67
1.36
0.07
Grand Avg 49.26
2.75
7.59
5.59
0.53
0.09
49.67
1.36
0.24
13(10.1 %) More than 3 norm. S.D. N
5(3.9 %) Between 2 and 3 norm. S.D. *
86(66.7 %) Within 1 norm. S.D.
of known value
25(19.4 %) Between 1 and 2 norm. S.D.
-------
25/44
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
1
Cobalt-60 }
Lab
A
AE
AF
AH
AI
AJ
AK
AL
AP
AR
AU
AW
AZ
BA
BB
BC
BG
BH
BK
BL
BM
BN
BO
B3
BW
C
CA
CE
CG
CJ
CK
CM
CO
CP
CQ
CS
CX
D
DB
DD
DE
DG
DI
DL
DM
=
0 =
Res. 1
42.0
47.0
47.0
46.0
49.0
48.0
51.0
48.0
49.0
49.0
46.0
55.0
51.0
47.0
67,0
52.0
52.0
49.0
50.0
48.0
48.0
51.0
51.0
54.0
50.0
51.0
54.0
50.0
52.0
49.0
59.0
49.0
47.0
46.0
49.0
47.0
48.0
Res. 2
45.0
51.0
46.0
44.0
50.0
48.0
45.0
49.0
51.0
48.0
45.0
49.0
49.0
47.0
85.0
51.0
52.0
51.0
49.0
47.0
51.0
50.0
51.0
55.0
56.0
51.0
53.0
52.0
51.0
50.0
60.0
48.0
47.0
47.0
52.0
52.0
48.0
Res. 3
' 44.0
46.0
49.0
44.0
50.0
48.0
50.0
50.0
51.0
47.0
52.0
51.0
50.0
46.0
65.0
54.0
52.0
49.0
52.0
49.0
50.0
50.0
49.0
54.0
55.0
53.0
58.0
54.0
47.0
52.0
58.0
49.0
47.0
48.0
52.0
48.0
49.0
No data submitted
Insufficient
data
X ~
Exper.
Sigma
1.53
2.65
1.53
1.15
0.58
0.00
3.21
1.00
1.15
1.00
3.79
3.06
1.00
0.58
11.02
1.53
0.00
1.15
1.53
1.00
1.53
0.58
1.15
0.58
3.21
1.15
2.65
2.00
2.65
1.53
1.00
0.58
0.00
1.00
1.73
2.65
0.58
Rng anal
(R + SR)
0.354
0.591
0.354
0.236
0.118
0.000
0.709
0.236
0.236
0.236
0.827
0.709
0.236
0.118
3.596
0.354
0.000
0.236
0.354
0.236
0.354
0.118
0.236
0.118
0.709
0.236
0.591
0.473
0.591
0.354
0.236
0.118
0.000
0.236
0.354
0.591
0.118
Normalized deviation
Average
43.67
48.00
47.33
44.67
49.67
48.00
48.67
49.00
50.33
48.00
47.67
51.67
50.00
46.67
72.33
52.33
52.00
49.67
50.33
48.00
49.67
50.33
50.33
54.33
53.67
51.67
55.00
52.00
50.00
50.33
59.00
48.67
.
47.00
47.00
51.00
49.00
48.33
TAG SYMBOLS
Determined
to be an outlier
(grand-avg)
-1.94
-0.44
-0.67
-1.59
0.14
-0.44
-0.21
-0.09
0.37
-0.44
-0.55
0.83
0.26
-0.90
7J9
1.06
0.95
0.14
0.37
-0.44
0.14
0.37
0.37
1.76
1.53
0.83
1.99
0.95
0.26
0.37
3.37
-0.21
-0.78
-0.78
0.60
-0.09
-0.32
1T = Above
(known)
-1.85
-0.35
-0.58
-1.50
0.23
-0.35
-0.12
0.00
0.46
-0.35
-0.46
0.92
0.35
-0.81
8.08
1.15
1.04
0.23
0.46
-0.35
0.23
0.46
0.46
1.85
1.62
0.92
2.08
1.04
0.35
0.46
3.46
-0.12
-0.69
-0.69
0.69
0.00
-0.23
control
U =. Below control
Tag
.
«
X
*
X
*
limit
limit 1
-------
o
o
o
L_
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
26
744
Cobalt-60
Lab
DO
DS
DT
DZ
E
EB
EL
EO
ER
EV
EX
FF
FJ
FL
FN
FU
FZ
GE
GI
GQ
GT
GZ
HI
HK
HL
HP
HX
I
1C
m
J
JE
JG
JN
JQ
JS
JX
JY
K
KE
KT
KX
L
LF
LL
s
(0*
Res. 1
51.0
48.0
42.0
46.0
52.0
47.0
55.0
52.0
49.0
50.0
53.0
53.0
44.0
48.0
34.0
51.0
49.0
45.0
84.0
52.0
50.0
49.0
45.0
49.0
50.0
52.0
47.0
50.0
54.0
51.0
Res. 2
52.0
48.0
43.0
48.0
51.0
47.0
59.0
49.0
49.0
51.0
52.0
48.0
49.0
48.0
38.0
49.0
49.0
44.0
84.0
49.0
49.0
51.0
48.0
47.0
51.0
52.0
43.0
49.0
55.0
50.0
Res. 3
56.0
48.0
41.0
48.0
51.0
48.0
57.0
55.0
53.0
49.0
53.0
59.0
48.0
48.0
42.0
50.0
49.0
44.0
84.0
48.0
53.0
50.0
47.0
52.0
51.0
51.0
45.0
51.0
54.0
47.0
No data submitted
Insufficient
data
x =
Exper.
Sigma
2.65
0.00
1.00
1.15
0.58
0.58
2.00
3.00
2.31
1.00
0.58
5.51
2.65
0.00
4.00
1.00
0.00
0.58
0.00
2.08
2.08
1.00
1.53
2.52
0.58
0.58
2.00
1.00
0.58
2.08
Rng anal
(R + SR)
0.591
0.000
0.236
0.236
0.118
0.118
0.473
0.709
0.473
0.236
0.118
1.570
0.591
0.000
0.945
0.236
0.000
0.118
0.000
0.473
0.473
0.236
0.354
0.591
0.118
0.118
0.473
0.236
0.118
0.473
Average
53.00
48.00
42.00
47.33
51.33
47.33
57.00
52.00
50.33
50.00
52.67
53.33
47.00
48.00
38.00
50.00
49.00
44.33
84.00
49.67
50.67
50.00
46.67
49.33
50.67
51.67
45.00
50.00
54.33
49.33
TAG SYMBOLS
Determined
to be an outlier
Normalized deviation
(grand-avg) (known)
1.30
-0.44
-2.52
-0.67
0.72
-0.67
2.68
0.95
0.37
0.26
1.18
1.41
-0.78
-0.44
-3.90
0.26
-0.09
-1.71
12.03
0.14
0.49
0.26
-0.90
0.02
0.49
0.83
-1.48
0.26
1.76
0.02
1T = Above
Jl = Below
1.39
-0.35
-2.42
-0.58
0.81
-0.58
2.77
1.04
0.46
0.35
1.27
1.50
-0.69
-0.35
-3.81
0.35
0.00
-1.62
12.12
0.23
0.58
0.35
-0.81
0.12
0.58
0.92
-1.39
0.35
1.85
0.12
Tag
*
«
*
x
X
»
*
.
control limit
control limit
-------
27/44
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Cobalt-60
Lab
LR
LT
M
MA
MF
MP
MQ
MV
MY
N
NA
NH
NJ
NK
NO
NT
O
OF
OS
OX
OY
OZ
P
PA
PB
PG
PI
PM
PQ
PR
PV
PW
Q
QC
QJ
QP
QQ
QT
QU
QW
QX
QZ
RD
RF
RG
=
0 =
Res. 1
37.0
49.0
48.0
48.0
50.0
54.0
21,0
60.0
46.0
42.0
52.0
52.0
36.0
48.0
53.0
52.0
51.0
48.0
48.0
48.0
2.0
48.0
48.0
50.0
53.0
52.0
46.0
47.0
Res. 2
53.0
49.0
48.0
52.0
52.0
47.0
19.0
59.0
48.0
38.0
53.0
52.0
39.0
49.0
48.0
54.0
51.0
51.0
49.0
48.0
2.0
47.0
46.0
52.0
52.0
50.0
45.0
46.0
Res. 3
50.0
51.0
51.0
47.0
49.0
45.0
25.0
60.0
46.0
42.0
54.0
50.0
32.0
48.0
53.0
55.0
50.0
45.0
48.0
48.0
2.0
46.0
47.0
54.0
51.0
50.0
45.0
45.0
No data submitted
Insufficient
data
x =
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
8.50
1.15
1.73
2.65
1.53
4.73
3.06
0,58
1.16
2.31
1.00
1.15
3.51
0.58
2.89
1.53
0.58
3.00
0.58
0.00
0.00
1.00
1.00
2.00
1.00
1.15
0.58
1.00
2.695
0.236
0.354
0.591
0.354
1.120
0.709
0.118
0.236
0.473
0.236
0.236
0.827
0.118
0.591
0.354
0.118
0.709
0.118
0.000
0.000
0.236
0.236
0.473
0.236
0.236
0.118
0.236
46.67
49.67
49.00
49.00
50.33
48.67
21,67
59.67
46.67
40.67
53.00
51.33
35.67
48.33
51.33
53.67
50.67
48.00
48.33
48.00
2.00
47.00
47.00
52.00
52.00
50.67
45.33
46.00
TAG SYMBOLS
Determined
to be an
outlier
-0.90
0.14
-0.09
-0.09
0.37
-0.21
-9.56
3.60
-0.90
-2.98
1.30
0.72
-4.71
-0.32
0.72
1.53
0.49
-0.44
-0.32
-0.44
-16.37
-0.78
-0.78
0.95
0.95
0.49
-1.36
-1.13
ft = Above
-0.81
0.23
0.00
0.00
0.46
-0.12
-9.47 x
3.70 x
*
*
*
-0.81
-2.89
1.39
*
0.81
*
*
-4.62 x
-0.23
*
0.81
1.62
0.58
*
-0.35
-0.23
-0.35
*
^16.28 x
-0.69
-0.69
1.04
1.04
0.58
-1.27
-1.04
*
control limit
JJ- s Below control limit _,
-------
o
o
o
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Cobalt-60
Lab Res. 1
RK
RP
RR
RU
RV
RZ
S
sc
SD
SF
SI
SL
SM
SN
SO
SR
ss
ST
sx
sz
T
TD
TG
TH
TI
TJ
TL
TN
TQ
TS
TY
U
UA
UE
UK
UN
UP
UQ
uw
UY
VA
VC
VG
VH
VI
=
[ 0 s
36.0
48.0
49.0
48.0
44.0
43.0
52.0
52.0
48.0
45.0
50.0
54.0
48.0
49.0
45.0
64.0
117.0
50.0
41.0
45.0
50.0
50.0
63.0
53.0
46.0
53.0
46.0
47.0
50.0
Res. 2
' 35.0
49.0
50.0
49.0
46.0
43.0
50.0
50.0
48.0
48.0
47.0
55.0
49.0
47.0
49.0
63.0
114.0
50.0
40.0
48.0
52.0
50.0
95.0
50.0
54.0
54.0
52.0
48.0
51.0
Res. 3
36.0
48.0
49.0
48.0
45.0
44.0
49.0
50.0
48.0
47.0
49.0
54.0
52.0
48.0
47.0
61.0
115.0
50.0
46.0
43.0
52.0
51.0
94.0
50.0
50.0
52.0
55.0
48.0
50.0
No data submitted
Insufficient
data
x =
Exper.
Sigma
0.58
0.58
0.58
0.58
1.00
0.58
1.53
1.15
0.00
1.53
1.53
0.58
2.08
1.00
2.00
1.53
1.53
0.00
3.21
2.52
1.15
0.58
18.19
1.73
4.00
1.00
4.58
0.58
0.58
Rng anal
(R + SR) Average
0.118
0.118
0.118
0.118
0.236
0.118
0.354
0.236
0.000
0.354
0.354
0.118
0.473
0.236
0.473
0.354
0.354
0.000
0.709
0.591
0.236
0.118
6.296
0.354
0.945
0.236
1.120
0.118
0.118
35.67
48.33
49.33
48.33
45.00
43.33
50.33
50.67
48.00
46.67
48.67
54.33
49.67
48.00
47.00
62.67
115.33
50.00
42.33
45.33
51.33
' 50.33
84.00
51.00
50.00
53.00
51.00
47.67
50.33
TAG SYMBOLS
Determined
to be an
outlier
28/44
Normalized deviation
(grand-avg) (known) Tag
-4.71
-0.32
0.02
-0.32
-1.48
-2.05
0.37
0.49
-0.44
-0.90
-0.21
1.76
0.14
-0.44
-0.78
4.64
22.89
0.26
-2.40
-1.36
0.72
0.37
12.03
0.60
0.26
1.30
0.60
-0.55
0.37
ft = Above
II s Below
-4.62 X
-0.23
0.12
-0.23
-1.39
-1.96
0.46
0.58
-0.35
-0.81
*
-0.12
1.85
*
0.23
-0.35
-0.69
4.73 x
22.98 x
0.35
*
-2.31
*
-1.27
0.81
*
0.46
»
12.12 x
0.69
0.35
*
1.39
0.69
j
-0.46
0.46
control limit
control limit
-------
ft
29/44 CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Cobalt-60
Lab Res. 1 Res. 2
VJ
VM 51.0 50.0
VO 53.0 48.0
VT
W 48.0 48.0
WE
WF 49.0 50.0
WO
X 68.0 62.0
Exper. Rng anal
Res. 3 Sigma (R + SR)
50.0 0.58 0.118
51.0 2.52 0.591
44.0 2.31 0.473
49.0 0.58 0.118
61.0 2.08 0.473
Normalized deviation
Average (grand-avg) (known)
50.33 0.37 0.46
50.67 0.49 0.58
46.67 -0.90 -0.81
49.33 0.02 0.12
60.33 3.84 3.93
fl
Tag
»
*
*
x
Data sorted by Laboratory Average
Average Tag
2.00 x
21.67 x
35.67 x
35.67 x
38.00 x
40.67
42.00
42.33
43.33
43.67
44.33
44.67
45.00
45.00
45.33
45.33
46.00
46.67
46.67
46.67
46.67
46.67
46.67
47.00
47.00
47.00
47.00
47.00
47.00
47.33
47.33
47.33
47.67
= No data submitted
0 = Insufficient data
y-
Lab Average Tag
QJ 47.67
MV 48.00
RK 48.00
P 48.00
m 48.00
NK 48.00
DZ 48.00
TL 48.00
SD 48.00
A 48.00
HP 48.00
AH 48.33
SC 48.33
K 48.33
TQ 48.33
QZ 48.33
RF 48.67
W 48.67
SN 48.67
NJ 48.67
LR 49.00
JE 49.00
BC 49.00
T 49.00
QT 49.00
QP 49.33
GI 49.33
DE 49.33
DD 49.33
EL 49.67
E 49.67
AF 49.67
VH 49.67
TAG SYMBOLS
Lab Average Tag
AZ 49.67
SZ 49.67
SM 50.00
Q 50.00
PV 50.00
GQ 50.00
DT 50.00
BN 50.00
AW 50.00
AK 50.00
AE 50.33
S 50.33
RU 50.33
PW 50.33
PB 50.33
DM 50.33
SR 50.33
MQ 50.33
CX 50.33
AL 50.33
MA 50.33
M 50.67
HL 50.67
DL 50.67
AP 50.67
WF 50.67
RZ 50.67
LF 51.00
JG 51.00
SX 51.00
LT 51.33
I 51.33
BO 51.33
1T = Above control
x = Determined to be an outlier li = Below control
Lab
BL
AJ
UP
TI
KX
J
HK
FU
CP
BB
VM
VI
U
SF
MP
FL
CQ
CA
C
BM
AU
VO
SI
QX
PQ
JS
1C
UY
UN
DG
TS
PI
0
limit
limit
->j
-------
o
o
o
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Cobalt-60
Data sorted by Laboratory Average
Average Tag Lab Average Tag Lab Average
51.33 EB 52.67 FZ 55.00
51.67 JY 53.00 UW 57.00
51.67 CK 53.00 NO 59.00
51.67 BA 53.00 DO 59.67
52.00 QW 53.33 GE 60.33
52.00 QU 53.67 PM 62.67
52.00 FJ 53.67 CJ 72.33
52.00 CO 54.33 SS 84.00
52.00 BK 54.33 L 84.00
52.33 BH 54.33 CE 115.33
% responding labs Frequency distribution
-__-__-________
.
I.H.- _ __
" -'6 ' -4 -2 ' 6 T S
Normalized deviation of the mean from the known value
% responding labs Frequency distribution
in, - ,., . ,. . .
1 1 Jl
n . _ _ __ .___ niiiii_.B_ _
-6 -4 -2 0 +2
Normalized deviation of the mean from the grand average
= No data submitted TAG SYMBOLS ft =
0 = Insufficient data x = Determined to be an outlier li =
30/44
Tag Lab
CM
EX
x CS
x MY
x X
x TD
x BG
x UK
x HX
x TH
\w
+4 +6
+4 +6
Above control limit
Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
31/44
o
o
o
Cesium-134 Statistical Summary 189 Participants
The known value of this nuclide is 40.0 pCi/1 with an expected precision of 5.0; the control limits
are 31.3 to 48.7; the warning regions are 31.3 to 34.2 and 45.8 to 48.7
60(31.7 %) Failed to respond .
8(4.2 %) Outliers '
3(1.6 %) Out of control *
but not an outlier
Statistic
. 97(51.3 %) Within all limits
Respondents
-- 21(11.1 %) In warning zone
but within control
Non-outliers
Mean
Std. Dev.
Variance
%Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
36.57
7.10
50.45
19.42
-8.59
-0.48
36.67
-8.33
-0.47
Grand Avg 36.71
3.06
9.38
8.34
-8.22
-1.07
36.67
-8.33
-1.09
11 (8.5 %) More than 3 norm. S.D.
21(16.3 %) Between 2 and 3 norm
45(34.9 %) Within 1 norm. S.D.
of known value
* 52(40.3 %) Between 1 and 2 norm. S.D.
-------
32/44
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Cesium- 134
Lab
A
AE
AF
AH
AI
AJ
AK
AL
AP
AR
AU
AW
AZ
BA
BB
BC
BG
BH
BK
BL
BM
BN
BO
BS
BW
C
CA
CE
CG
CJ
CK
CM
CO
CP
CQ
cs
ex
D
DB
DD
DE
DG
DI
DL
DM
Res. 1
31.0
36.0
32.0
36.0
35.0
36.0
43.0
37.0
36.0
34.0
51.0
39.0
38.0
34.0
30.0
35.0
44.0
38.0
38.0
35.0
33.0
38.0
37.0
37.0
33.0
35.0
36.0
40.0
41.0
34.0
45.0
39.0
37.0
35.0
36.0
41.0
37.0
Res. 2
33.0
36.0
35.0
34.0
34.0
36.0
41.0
37.0
39.0
33.0
40.0
39.0
39.0
35.0
30.0
33.0
44.0
37.0
35.0
36.0
36.0
37.0
35.0
38.0
32.0
35.0
39.0
38.0
37.0
35.0
46.0
38.0
36.0
35.0
35.0
37.0
38.0
Res. 3
32.0
38.0
34.0
35.0
34.0
36.0
40.0
40.0
35.0
35.0
50.0
40.0
39.0
36.0
35.0
36.0
44.0
38.0
35.0
36.0
37.0
38.0
37.0
39.0
38.0
32.0
41.0
34.0
35.0
36.0
46.0
39.0
38.0
35.0
33.0
37.0
35.0
= No data submitted
.0 =
Insufficient
data
x =
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known)
1.00
1.15
1.53
1.00
0.58
0.00
1.53
1.73
2.08
1.00
6.08
0.58
0.58
1.00
2.89
1.53
0.00
0.58
1.73
0.58
2.08
0.58
1.15
1.00
3.21
1.73
2.52
3.06
3.06
1.00
0.58
0.58
1.00
0.00
1.53
2.31
1.53
0.236
0.236
0.354
0.236
0.118
0.000
0.354
0.354
0.473
0.236
1.570
0.118
0.118
0.236
0.591
0.354
0.000
0.118
0.354
0.118
0.473
0.118
0.236
0.236
0.709
0.354
0.591
0.709
0.709
0.236
0.118
0.118
0.236
0.000
0.354
0.473
0.354
32.00
36.67
33.67
35.00
34.33
36.00
41.33
38.00
36.67
34.00
47.00
39.33
38.67
35.00
31.67
34.67
44.00
37.67
36.00
35.67
35.33
37.67
36.33
38.00
34.33
34.00
38.67
37.33
37.67
35.00
45.67
38.67
37.00
35.00
34.67
38.33
36.67
TAG SYMBOLS
Determined
to be an
outlier
-1.63
-0.02
-1.05
-0.59
-0.82
-0.25
1.60
0.45
-0.02
-0.94
3'56
0.91
0.68
-0.59
-1.75
-0.71
2.53
0.33
-0.25
-0.36
-0.48
0.33
-0.13
0.45
-0.82
-0.94
0.68
0.22
0.33
-0.59
3.10
0.68
0.10
-0.59
-0.71
0.56
-0.02
ft = Above
li s Below
-2.77
-1.15
-2.19
-1.73
-1.96
-1.39
0.46
-0.69
-1.15
-2.08
2.42
-0.23
-0.46
-1.73
-2.89
-1.85
1.39
-0.81
-1.39
-1.50
-1.62
-0.81
-1.27
-0.69
-1.96
-2.08
-0.46
-0.92
-0.81
-1.73
1.96
-0.46
-1.04
-1.73
-1.85
-0.58
-1.15
control
control
N
Tag
*
*
*
*
limit
limit
-------
o
o
o
L_
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
33
/44
Cesium-134
Lab
DO
DS
DT
DZ
E
EB
EL
EO
ER
EV
EX
FF
FJ
FL
FN
FU
FZ
GE
GI
GQ
GT
GZ
ffl
HK
HL
HP
HX
I
1C
m
J
JE
JG
JN
JQ
JS
JX
JY
K
KE
KT
KX
L
LF
LL
5
0 =
Res. 1
30.0
39.0
43.0
38.0
37.0
36.0
37.0
39.0
37.0
38.0
37.0
34.0
32.0
38.0
22.0
36.0
40.0
38.0
65.0
42.0
41.0
38.0
33.0
33.0
38.0
37.0
43.0
37.0
40.0
33.0
Res. 2
35.0
35.0
32.0
37.0
37.0
39.0
42.0
39.0
41.0
39.0
41.0
35.0
36.0
37.0
23.0
37.0
40.0
37.0
62.0
39.0
41.0
38.0
34.0
33.0
39.0
37.0
40.0
37.0
40.0
34.0
Res. 3
35.0
36.0
30.0
34.0
37.0
37.0
41.0
37.0
39.0
37.0
43.0
36.0
34.0
39.0
24.0
37.0
40.0
38.0
64.0
36.0
47.0
37.0
35.0
29.0
38.0
36.0
42.0
39.0
42.0
33.0
No data submitted
Insufficient
data
x =
Exper.
Sigma
2.89
2.08
7.00
2.08
0.00
1.53
2.65
1.15
2.00
1.00
3.06
1.00
2.00
1.00
1.00
0.58
0.00
0.58
1.53
3.00
3.46
0.58
1.00
2.31
0.58
0.58
1.53
1.15
1.15
0.58
Rng anal
(R + SR)
0.591
0.473
2.020
0.473
0.000
0.354
0.591
0.236
0.473
0.236
0.709
0.236
0.473
0.236
0.236
0.118
0.000
0.118
0.354
0.709
0.709
0.118
0.236
0.473
0.118
0.118
0.354
0.236
0.236
0.118
-
Average
33.33
36.67
35.00
36.33
37.00
37.33
40.00
38.33
39.00
38.00
40.33
35.00
34.00
38.00
23.00
36.67
40.00
37.67
63.67
39.00
43.00
37.67
34.00
31.67
38.33
36.67
41.67
37.67
40.67
33.33
TAG SYMBOLS
Determined
to be an outlier
Normalized deviation
(grand-avg) (known)
-1.17
-0.02
-0.59
-0.13
0.10
0.22
1.14
0.56
0.79
0.45
1.25
-0.59
-0.94
0.45
-4.75
-0.02
1.14
0.33
9.34
0.79
2.18
0.33
-0.94
-1.75
0.56
-0.02
1.72
0.33
1.37
-1.17
1T 3 Above
-H = Below
-2.31
-1.15
-1.73
-1.27
-1.04
-0.92
0.00
-0.58
-0.35
-0.69
0.12
-1.73
-2.08
-0.69
-5.89
-1.15
0.00
-0.81
8.20
-0.35
1.04
-0.81
-2.08
-2.89
-0.58
-1.15
0.58
-0.81
0.23
-2.31
Tag
.
.
.
,
*
*
X
X
*
*
*
«
\
control limit
control limit ,
-------
34/44
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
1
Cesium- 134
Lab
LR
LT
M
MA
MF
MP
MQ
MV
MY
N
NA
NH
NJ
NK
NO
NT
O
OF
OS
OX
OY
OZ
P
PA
PB
PG
PI
PM
PQ
PR
PV
PW
Q
QC
QJ
QP
QQ
QT
QU
QW
QX
QZ
RD
RF
RG
=
0 s
Res. 1
37.0
36.0
38.0
32.0
35.0
44.0
11.0
30.0
33.0
31.0
36.0
36.0
20.0
22.0
38.0
36.0
34.0
37.0
35.0
38.0
1.0
46.0
35.0
35.0
31.0
34.0
33.0
40.0
Res. 2
31.0
37.0
39.0
36.0
35.0
37.0
10.0
31.0
33.0
30.0
37.0
36.0
25.0
22.0
38.0
36.0
35.0
36.0
37.0
36.0
1.0
39.0
36.0
34.0
35.0
36.0
31.0
39.0
Res. 3
' 40.0
38.0
37.0
36.0
36.0
34.0
14.0
30.0
33.0
31.0
38.0
36.0
20.0
21.0
39.0
39.0
34.0
30.0
37.0
36.0
1.0
41.0
35.0
36.0
33.0
38.0
31.0
38.0
No data submitted
Insufficient
data
X 5
Exper.
Sigma
4.58
1.00
1.00
2.31
0.58
5.13
2.08
0.58
0.00
0.58
1.00
0.00
2.89
0.58
0.58
1.73
0.58
3.79
1.15
1.15
0.00
3.61
0.58
1.00
2.00
2.00
1.15
1.00
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
1.120
0.236
0.236
0.473
0.118
1.345
0.473
0.118
0.000
0.118
0.236
0.000
0.591
0.118
0.118
0.354
0.118
0.827
0.236
0.236
0.000
0.827
0.118
0.236
0.473
0.473
0.236
0.236
36.00
37.00
38.00
34.67
35.33
38.33
11.67
30.33
33.00
30.67
37.00
36.00
21.67
21.67
38.33
37.00
34.33
34.33
36.33
36.67
1.00
42.00
35.33
35.00
33.00
36.00
31.67
39.00
-
TAG SYMBOLS
Determined
to be an
outlier
-0.25
0.10
0.45
-0.71
-0.48
0.56
-8.68
-2.21
"
-1.29
-2.09
0.10
-0.25
-5.21
-S.21
0.56
0.10
-0.82
-0.82
-0.13
-0.02
-1.39
-1.04
-0.69
-1.85
-1.62
-0.58
-9.81 x
-3.35 U
«
.
*
-2.42
-3.23 H
-1.04
*
-1.39
*
-6.35 x
-6.35 x
-0.58
-1.04
-1.96
-1.96
-1.27
-1.15
*
-12.37 -13.51 x
1.83
-0.48
-0.59
-1.29
-0.25
-1.75
0.79
ft s Above
U 5= Below
0.69
-1.62
-1.73
-2.42
-1.39
-2.89
-0.35
*
control limit
control limit
-------
o
o
o
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
35/44
Cesium-134
Lab
RK
RP
RR
RU
RV
RZ
S
SC
SD
SF
SI
SL
SM
SN
SO
SR
ss
ST
sx
sz
T
TD
TG
TH
TI
TJ
TL
TN
TQ
TS
TY
U
UA
UE
UK
UN
UP
UQ
uw
UY
VA
VC
VG
VH
VI
Res. 1
28.0
35.0
38.0
37.0
33.0
34.0
39.0
37.0
36.0
36.0
38.0
42.0
33.0
35.0
38.0
46.0
80.0
38.0
33.0
33.0
40.0
40.0
62.0
37.0
32.0
41.0
36.0
32.0
31.0
Res. 2
28.0
34.0
39.0
38.0
34.0
35.0
37.0
38.0
39.0
37.0
37.0
41.0
34.0
35.0
39.0
44.0
79.0
36.0
28.0
36.0
40.0
39.0
52.0
37.0
40.0
39.0
39.0
34.0
34.0
Res. 3
27.0
35.0
39.0
39.0
35.0
34.0
37.0
40.0
36.0
37.0
33.0
40.0
35.0
35.0
35.0
45.0
78.0
37.0
37.0
33.0
41.0
38.0
46.0
36.0
36.0
41.0
40.0
36.0
31.0
= No data submitted
0 =
Insufficient
data
x =
Exper.
Sigma
0.58
0.58
0.58
1.00
1.00
0.58
1.15
1.53
1.73
0.58
2.65
1.00
1.00
0.00
2.08
1.00
1.00
1.00
4.51
1.73
0.58
1.00
8.08
0.58
4.00
1.15
2.08
2.00
1.73
Rng anal
(R + SR)
0.118
0.118
0.118
0.236
0.236
0.118
0.236
0.354
0.354
0.118
0.591
0.236
0.236
0.000
0.473
0.236
0.236
0.236
1.120
0.354
0.118
0.236
2.695
0.118
0.945
0.236
0.473
0.473
0.354
Average
27.67
34.67
38.67
38.00
34.00
34.33
37.67
38.33
37.00
36.67
36.00
41.00
34.00
35.00
37.33
45.00
79.00
37.00
32.67
34.00
40.33
39.00
53.33
36.67
36.00
40.33
38.33
34.00
32.00
TAG SYMBOLS
Determined
to be an outlier
Normalized deviation
(grand-avg) (known) Tag
-3.13
-0.71
0.68
0.45
-0.94
-0.82
0.33
0.56
0.10
-0.02
-0.25
1.49
-0.94
-0.59
0.22
2.87
14.65
0.10
-1.40
-0.94
1.25
0.79
5.76
-0.02
-0.25
1.25
0.56
-0.94
-1.63
ff = Above
JJ- = Below
-4.27 JJ.
.
-1.85
*
-0.46
-0.69
-2.08
-1.96
-0.81
-0.58
.
-1.04
-1.15
-1.39
0.35
«
-2.08
-1.73
-0.92
1.73
13.51 x
-1.04
*
-2.54
-2.08
0.12
«
-0.35
,
.
4.62 x
-1.15
-1.39
.
0.12
-0.58
«
*
-2.08
-2.77
control limit
control limit
-------
36/44 CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Cesium- 134
Lab Res. 1 Res. 2
VJ
VM 39.0 38.0
VO 38.0 39.0
VT
W 35.0 36.0
WE
WF 34.0 34.0
WO
X 46.0 40.0
Exper. Rng anal
Res. 3 Sigma (R + SR)
40.0 1.00 0.236
35.0 2.08 0.473
35.0 0.58 0.118
34.0 0.00 0.000
38.0 4.16 0.945
Normalized deviation
Average (grand-avg) (known)
39.00 0.79 -0.35
37.33 0.22 -0.92
35.33 -0.48 -1.62
34.00 -0.94 -2.08
41.33 1.60 0.46
'
Tag
*
*
Data sorted by Laboratory Average
Average Tag
1.00 x
11.67 x
21.67 x
21.67 x
23.00 x
27.67 U
30.33 JJ.
30.67 U
31.67
31.67
31.67
32.00
32.00
32.67
33.00
33.00
33.33
33.33
33.67
34.00
34.00
34.00
34.00
34.00
34.00
34.00
34.00
34.00
34.33
34.33
34.33
34.33
34.33
= No data submitted
0 s Insufficient data
V*
Lab
QJ
MV
PB
P
HI
RK
MY
NK
QZ
JG
BG
VI
A
TL
QW
NJ
LF
DO
AF
WF
VH
TQ
SX
sc
JE
GI
CK
AW
SD
PV
PQ
CJ
AJ
Average Tag
34.67
34.67
34.67
34.67
35.00
35.00
35.00
35.00
35.00
35.00
35.00
35.00
35.33
35.33
35.33
35.33
35.67
36.00
36.00
36.00
36.00
36.00
36.00
36.00
36.33
36.33
36.33
36.67
36.67
36.67
36.67
36.67
36.67
TAG SYMBOLS
Lab
RU
MA
DG
BH
SZ
QU
GE
DZ
DE
CQ
BC
AH
W
QT
MP
BO
BN
UP
SR
QX
O
LR
BM
AK
PW
E
CA
UN
SN
Q
JY
HK
DT
Average Tag
36.67
36.67 '
36.67
37.00
37.00
37.00
37.00
37.00
37.00
37.00
37.33
37.33
37.33
37.33
37.67
37.67
37.67
37.67
37.67
37.67
37.67
38.00
38.00
38.00
38.00
38.00
38.00
38.33
38.33
38.33
38.33
38.33
38.33
ft = Above control
x s Determined to be an outlier U- = Below control
Lab
DM
AU
AE
TI
SM
PM
NO
LT
EB
DD
VO
T
EL
CO
SF
KX
J
HP
CP
C
BL
S
M
GQ
FU
CE
AP
UY
SI
PI
MQ
JS
FJ
limit
limit
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
37/44
o
Cesium-134
Average
Tag"
Data sorted by Laboratory Average
Lab Average Tag Lab Average
Tag
Lab
38.33
38.67
38.67
38.67
38.67
39.00
39.00
39.00
39.00
39.00
DL
RZ
CX
CM
BB
VM
U
RF
I
FL
39.33
40.00
40.00
40.33
40.33
40.33
40.67
41.00
41.33
41.33
BA
HL
EX
UW
TS
FZ
L
ss
X
AL
41.67
42.00
43.00
44.00
45.00
45.67
47.00
53.33
63.67
79.00
x
x
X
K
QP
1C
BK
TD
CS
AZ
UK
HX
TH
O
o
% responding labs
Frequency distribution
-6
-4
% responding labs
-20 +2
Normalized deviation of the mean from the known value
Frequency distribution
10-
-6
-4 -20 +2 +4
Normalized deviation of the mean from the grand average
s No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an outlier
ft = Above control limit
U- = Below control limit
-------
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
38/44
o
Cesium-137 Statistical Summary 189 Participants
The known value of this nuclide is 30.0 pCi/1 with an expected precision of 5.0; the control limits
are 21.3 to 38.7; the warning regions are 21.3 to 24.2 and 35.8 to 38.7
60(31.7 %) Failed to respond %
10(5.3%) Outliers-'
1 (O.5 %) Out of control
but not an outlier
Statistic
111 (58.7 %) Within all limits
Respondents
-- 7(3.7 %) In warning zone
but within control
Non-outliers
O
Mean
Std. Dev.
Variance
%Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
31.12
6.28
39.47
20.19
3.75
0.18
30.67
2.22
0.11
Grand Avg 30.84
2.52
6.35
8.17
2.81
0.33
30.67
2.22
0.26
O
11(8.5 %) More than 3 norm. S.D. »%
7(5.4 %) Between 2 and 3 norm. S.D.
99(76.7 %) Within 1 norm. S.D.
of known value
12(9.3 %) Between 1 and 2 norm. S.D.
-------
1 397
44
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Cesium-137
Lab
A
AE
AT
AH
AI
AJ
AK
AL
AP
AR
AU
AW
AZ
BA
BB
BC
BO
BH
BK
BL
BM
BN
BO
BS
BW
C
CA
CE
CO
CJ
CK
CM
CO
CP
CQ
cs
ex
D
DB
DD
DE
DG
DI
DL
DM
=
0 =
Res. 1
28.0
31.0
32.0
32.0
30.0
30.0
28.0
32.0
33.0
31.0
34.0
25.0
32.0
31.0
16.0
34.0
38.0
31.0
32.0
28.0
29.0
31.0
31.0
32.0
35.0
33.0
30.0
28.0
31.0
32.0
39.0
29.0
31.0
29.0
35.0
27.0
31.0
Res. 2
28.0
30.0
26.0
29.0
30.0
30.0
34.0
30.0
31.0
27.0
32.0
28.0
29.0
30.0
21.0
32.0
38.0
30.0
29.0
31.0
31.0
32.0
30.0
30.0
35.0
33.0
30.0
31.0
29.0
32.0
38.0
33.0
30.0
30.0
35.0
31.0
31.0
Res. 3
27.0
30.0
27.0
30.0
30.0
30.0
32.0
29.0
29.0
32.0
31.0
29.0
31.0
29.0
14.0
32.0
38.0
30.0
28.0
32.0
29.0
31.0
33.0
34.0
35.0
27.0
32.0
34.0
30.0
34.0
40.0
33.0
32.0
30.0
33.0
28.0
29.0
No data submitted
Insufficient
data
x =
Exper.
Sigma
0.58
0.58
3.21
1.53
0.00
0.00
3.06
1.53
2.00
2.65
1.53
2.08
1.53
1.00
3.61
1.15
0.00
0.58
2.08
2.08
1.15
0.58
1.53
2.00
0.00
3.46
1.15
3.00
1.00
1.15
1.00
2.31
1.00
0.58
1.15
2.08
1.15
Rng anal
(R + SR)
0.118
0.118
0.709
0.354
0.000
0.000
0.709
0.354
0.473
0.591
0.354
0.473
0.354
0.236
0.827
0.236
0.000
0.118
0.473
0.473
0.236
0.118
0.354
0.473
0.000
0.709
0.236
0.709
0.236
0.236
0.236
0.473
0.236
0.118
0.236
0.473
0.236
Average
27.67
30.33
28.33
30.33
30.00
30.00
31.33
30.33
31.00
30.00
32.33
27.33
30.67
30.00
17.00
32.67
38.00
30.33
29.67
30.33
29.67
31.33
31.33
32.00
35.00
31.00
30.67
31.00
30.00
32.67
39.00
31.67
31.00
29.67
34.33
28.67
30.33
TAG SYMBOLS
Determined
to be an outlier
Normalized deviation
(grand-avg) (known) Tag
-1.10
-0.18
-0.87
-0.18
-0.29
-0.29
0.17
-0.18
0.05
-0.29
0.52
-1.22
-0.06
-0.29
-4.80
0.63
2.48
-0.18
-0.41
-0.18
-0.41
0.17
0.17
0.40
1.44
0.05
-0.06
0.05
-0.29
0.63
2.83
0.29
0.05
-0.41
1.21
-0.75
-0.18
ft = Above
U- = Below
-0.81
0.12
-0.58
0.12
^
0.00
0.00
0.46
0.12
*
0.35
0.00
0.81
-0.92
0.23
0.00
-4.50 x
0.92
2.77
0.12
-0.12
0.12
-0.12
.
t
0.46
0.46
0.69
*
1.73
0.35
0.23
0.35
0.00
0.92
3.12 ft
0.58
*
,
0.35
-0.12
1.50
,
-0.46
0.12
control limit
control limit
-y
-------
o
o
o
CRD-LV
Cesium- 137
Lab Res. 1
Res.
2
Performance Evaluation
Res. 3
Exper.
Sigma
Rng
(R +
: Blind-B, 17-Oct-1995
anal
SR)
Average
Normalized
(grand-avg)
40
deviation
(known)
744
Tag
DO
DS
DT
DZ
E
EB
EL
EO
ER
EV
EX
34.0
36.0
35.0
31.0
33.0
31.0
29.0
32.0
32.0
32.0
32.0
32.0
31.0
35.0
29.0
34.0
31.0
27.0
32.0
28.0
30.0
2.52
2.00
2.08
2.65
0.58
1.73
3.21
0.591
0.473
0.473
0.591
0.118
0.354
0.709
31.67
34.00
32.67
30.00
32.33
30.00
31.33
0.29
1.09
0.63
-0.29
0.52
-0.29
0.17
0.58
1.39
0.92
0.00
0.81
0.00
0.46
r a
FJ
FL
FN
FU
FZ
GE
GI
GQ
GT
GZ
ffl
HK
HL
HP
HX
I
1C
ID
J
JE
JG
ON
JQ
JS
JX
JY
K
KE
KT
KX
L
LF
LL
=
30.0
32.0
28.0
30.0
30.0
27.0
30.0
22.0
33.0
33.0
31.0
52.0
29.0
32.0
30.0
28.0
38.0
29.0
32.0
34.0
28.0
34.0
28.0
33.0
32.0
32.0
33.0
33.0
30.0
31.0
23.0
32.0
33.0
32.0
51.0
33.0
31.0
30.0
30.0
34.0
30.0
31.0
33.0
31.0
34.0
28.0
31.0
34.0
30.0
33.0
42.0
30.0
29.0
21.0
32.0
33.0
32.0
53.0
31.0
31.0
30.0
29.0
39.0
31.0
31.0
32.0
28.0
35.0
31.0
No data submitted
Insufficient
data
x =
1.53
1.15
2.00
1.73
6.24
1.73
1.00
1.00
0.58
0.00
0.58
1.00
2.00
0.58
0.00
1.00
2.65
1.00
0.58
1.00
1.73
0.58
1.73
0.354
0.236
0.473
0.354
1.795
0.354
0.236
0.236
0.118
0.000
0.118
0.236
0.473
0.118
0.000
0.236
0.591
0.236
0.118
0.236
0.354
0.118
0.354
31.33
32.67
30.00
32.00
35.00
29.00
30.00
22.00
32.33
33.00
31.67
52.00
31.00
31.33
*
30.00
29.00
37.00
30.00
31.33
33.00
29.00
34.33
29.00
TAG SYMBOLS
Determined
to be an
outlier
0.17
0.63
-0.29
0.40
1.44
-0.64
-0.29
-3.06
0.52
0.75
0.29
7.33
0.05
0.17
-0.29
-0.64
2.13
-0.29
0.17
0.75
-0.64
1.21
-0.64
ft = Above
11 = Below
0.46
0.92
0.00
0.69
1.73
-0.35
0.00
-2.77
0.81
1.04
0.58
7.62
0.35
0.46
0.00
-0.35
2.42
0.00
0.46
1.04
-0.35
1.50
-0.35
control
control
V
*
X
*
*
«
*
limit
limit
-------
41/44
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Cesium-137
Lab
LR
LT
M
MA
MF
MP
MQ
MV
MY
N
NA
NH
NJ
NK
NO
NT
0
OF
OS
OX
OY
OZ
P
PA
PB
PG
PI
PM
PQ
PR
PV
PW
Q
QC
QJ
QP
QQ
QT
QU
QW
QX
QZ
RD
RF
RG
=
0 =
Res. 1
27.0
30.0
28.0
30.0
30.0
34.0
10,0
41.0
29.0
24.0
33.0
31.0
17,0
28.0
34.0
27.0
31.0
28.0
30.0
28.0
1.0
28.0
29.0
33.0
33.0
36.0
28.0
28.0
Res. 2
31.0
29.0
30.0
26.0
30.0
31.0
9.0
40.0
28.0
22.0
34.0
31.0
19.0
28.0
33.0
32.0
30.0
29.0
31.0
29.0
1.0
34.0
30.0
33.0
32.0
31.0
27.0
28.0
Res. 3
33.0
33.0
30.0
31.0
31.0
30.0
14.0
41.0
28.0
25.0
35.0
31.0
20.0
32.0
33.0
36.0
30.0
27.0
31.0
32.0
1.0
31.0
29.0
32.0
32.0
34.0
28.0
29.0
No data submitted
Insufficient
data
x =
Exper.
Sigma
3.06
2.08
1.15
2.65
0.58
2.08
2.65
0.58
0.58
1.53
1.00
0.00
1.53
2.31
0.58
4.51
0.58
1.00
0.58
2.08
0.00
3.00
0.58
0.58
0.58
2.52
0.58
0.58
Rng anal
(R + SR)
0.709
0.473
0.236
0.591
0.118
0.473
0.591
0.118
0.118
0.354
0.236
0.000
0.354
0.473
0.118
1.120
0.118
0.236
0.118
0.473
0.000
0.709
0.118
0.118
0.118
0.591
0.118
0.118
Average
30.33
30.67
29.33
29.00
30.33
31.67
11.00
40.67
28.33
23.67
34.00
31.00
18.67
29.33
33.33
31.67
30.33
28.00
30.67
29.67
1.00
31.00
29.33
32.67
32.33
33.67
27.67
28.33
TAG SYMBOLS
Determined
to be an outlier
Normalized
(grand-avg)
-0.18
-0.06
-0.52
-0.64
-0.18
0.29
-6.87
3.40
-o:87
-2.49
1.09
0.05
*
-4,22
-0.52
0.86
0.29
-0.18
-0.98
-0.06
-0.41
-10.34
0.05
-0.52
0.63
0.52
0.98
-1.10
-0.87
deviation
(known) Tag
0.12
0.23
-0.23
-0.35
0.12
0.58
-6.58 x
3.70 x
*
*
-0.58
-2.19
1.39
*
0.35
*
*
*
-3.93 x
-0.23
1.15
0.58
0.12
-0.69
0.23
-0.12
*
10.05 x
0.35
-0.23
0.92
0.81
1.27
-0.81
-0.58
*
tl s Above control limit
11 s Below control limit
. y
-------
o
o
o
Cesium-137
Lab Res. 1
RK
RP
RR
RU
RV
RZ
S
sc
SD
SF
SI
SL
SM
SN
SO
SR
ss
ST
sx
sz
T
TD
TG
TH
TI
TJ
TL
TN
TQ
TS
TY
U
UA
UE
UK
UN
UP
UQ
UW
UY
VA
VC
VG
VH
VI
=
1 0 s
21.0
29.0
29.0
29.0
30.0
32.0
29.0
30.0
34.0
30.0
32.0
34.0
27.0
31.0
29.0
37.0
71.0
41.0
37,0
27.0
29.0
33.0
36.0
31.0
30.0
28.0
35.0
30.0
30.0
CRD-LV
Res. 2
22.0
30.0
29.0
31.0
29.0
29.0
30.0
31.0
31.0
33.0
31.0
32.0
27.0
30.0
28.0
35.0
68.0
32.0
46.0
29.0
31.0
32.0
66.0
31.0
35.0
29.0
36.0
28.0
30.0
Performance Evaluation: Blind-B, 17-Oct-1995
Res. 3
22.0
29.0
30.0
31.0
29.0
30.0
32.0
31.0
32.0
32.0
29.0
33.0
28.0
30.0
28.0
38.0
70,0
36.0
41.0
30.0
29.0
32.0
37.0
31.0
33.0
29.0
34.0
29.0
30.0
No data submitted
Insufficient
data
x =
Exper.
Sigma
0.58
0.58
0.58
1.15
0.58
1.53
1.53
0.58
1.53
1.53
1.53
1.00
0.58
0.58
0.58
1.53
1.53
4.51
4.51
1.53
1.15
0.58
11.27
0.00
2.52
0.58
1.00
1.00
0.00
Rng anal
(R + SR) Average
0.118
0.118
0.118
0.236
0.118
0.354
0.354
0.118
0.354
0.354
0.354
0.236
0.118
0.118
0.118
0.354
0.364
1.120
1.120
0.354
0.236
0.118
3.596
0.000
0.591
0.118
0.236
0.236
0.000
21.67
29.33
29.33
30.33
29.33
30.33
30.33
30.67
32.33
31.67
30.67
33.00
27.33
30.33
28.33
36.67
69.67
36.33
41.33
28.67
29.67
32.33
43.00
31.00
32.67
28.67
35.00
29.00
30.00
TAG SYMBOLS
Determined
to be an
outlier
42/44
Normalized deviation
(grand-avg) (known) Tag
-3.18
-0.52
-0.52
-0.18
-0.52
-0.18
-0.18
-0.06
0.52
0.29
-0.06
0.75
-1.22
-0.18
-0.87
2.02
13.45
1.90
3.63
-0.75
-0.41
0.52
4.21
0.05
0.63
-0.75
1.44
-0.64
-0.29
ft = Above
JJ = Below
-2.89
-0.23
-0.23
0.12
-0.23
0.12
0.12
0.23
0.81
0.58
0.23
1.04
-0.92
0.12
-0.58
2.31
13.74
2.19
3,93
-0.46
-0.12
0.81
4.50
0.35
0.92
-0.46
1.73
-0.35
0.00
control
control
*
«
X
X
*
X
limit
limit
-------
(f
43/44 CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995
Cesium-137
Lab Res. 1 Res. 2
VJ
VM 31.0 29.0
VO 33.0 32.0
VT
W 29.0 32.0
WE
WF 53.0 48,0
WO
X 31.0 31.0
Exper. Rng anal
Res. 3 Sigma (R + SR)
30.0 1.00 0.236
32.0 0.58 0.118
31.0 1.53 0.354
50.0 2.52 0,591
28.0 1.73 0.354
Normalized deviation
Average (grand-avg) (known)
30.00 -0.29 0.00
32.33 0.52 0.81
30.67 -0.06 0.23
50.33 6.75 7.04
30.00 -0.29 0.00
i
"
Tag
*
'
x
Data sorted by Laboratory Average
Average Tag
1.00 x
11.00 x
17.00 x
18.67 x
21.67
22.00
23.67
27.33
27.33
27.67
27.67
28.00
28.33
28.33
28.33
28.33
28.67
28.67
28.67
29.00
29.00
29.00
29.00
29.00
29.00
29.33
29.33
29.33
29.33
29.33
29.33
29.67
29.67
= No data submitted
0 = Insufficient data
Lab Average Tag
QJ 29.67
MV 29.67
BG 29.67
P 30.00
RK 30.00
HI 30.00
NK 30.00
SX 30.00
BA 30.00
QZ 30.00
A 30.00
PV 30.00
T 30.00
RF 30.00
NJ 30.00
AF 30.00
UW 30.00
TQ 30.33
DL 30.33
VH 30.33
MA 30.33
LF 30.33
KX 30.33
JE 30.33
GI 30.33
SC 30.33
RZ 30.33
RU 30.33
QT 30.33
PB 30.33
M 30.67
TS 30.67
Q 30.67
TAG SYMBOLS
Lab Average Tag
DE 30.67
BO 30.67
BM 30.67
X 30.67
VM 31.00
VI 31.00
JS 31.00
J 31.00
GQ 31.00
FU 31.00
EL 31.00
E 31.00
CP 31.33
BC 31.33
AW 31.33
AK 31.33
AJ 31.33
SZ 31.33
SF 31.33
SD 31.67
S 31.67
PQ 31.67
MP 31.67
LR 31.67
DM 31.67
BN 32.00
BL 32.00
AP 32.33
AH 32.33
AE 32.33
W 32.33
SR 32.33
SI 32.33
IT s Above control
x s Determined to be an outlier -H = Below control
Lab
PW
LT
CM
BB
UN
QP
o
i
DD
CO
CK
AU
JY
1C
FJ
EX
CA
C
AL
SN
PM
MQ
HP
DO
CX
FZ
CE
VO
U
SM
QW
HK
EB
limit
limit 1
-------
o
o
o
f '
CRD-LV Performance Evaluation: Blind-B, 17-Oct-1995 44/44
Cesium-137
Data sorted by Laboratory Average
Average Tag Lab Av
32.33 AZ
32.67 UP
32.67 QU
32.67 FL
32.67 DZ
32.67 CQ
32.67 BH
33.00 SS
33.00 K
33.00 HL
% responding labs
in.
0 m m _
erage Tag Lab Average Tag Lab
33.33 PI 36.67 TD
33.67 QX 37.00 JG
34.00 NO 38.00 BK
34.00 Dt 39.00 ft CS
34.33 L 40.67 x MY
34.33 DG 41.33 x TL
35.00 UY 43.00 x UK
35.00 GE 50.33 x WF
35.00 CJ 52.00 x HX
36.33 TI 69.67 x TH
Frequency distribution
lll«_l
..lllllllll . _
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the known value
% responding labs
on. _______
in. _ ________________
Frequency distribution
B
t
Jflri
m.l _ __ _
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
= No data submitted
10 = Insufficient data x =
TAG SYMBOLS fl s Above control limit
= Determined to be an outlier -11 = Below control limit
------- |