United States
Environmental Protection
Agency
Office of Research and
Development
Washington, DC 20460
EPA600/R-95/143
September 1995
vvEPA
Gross Alpha-Beta in
Water Performance
Evaluation Study
A Statistical Evaluation of
the July 21, 1995 Data
0593RSB95COV-143
-------
Gross Alpha-Beta in Water
Performance Evaluation Study
July 21, 1995
Environmental Protection Agency
National Exposure Research Laboratory
Characterization Research Division
Las Vegas, Nevada
-------
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 Radiation Sciences Branch (CRD-LV)
Performance Evaluation Study for Gross Alpha-Beta in Water; July 21, 1995.
The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by CRD-LV's Radiochemistry 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.
George Dilbeck
Chemist
Radioanalysis Program
Enclosure
-------
NOTICE
This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subject to the Agency's review,
and has been approved for publication as
an EPA document.
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995 1/18
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 / 18 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-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 George Dilbeck, CRD-LV, 702/798-2104.
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995 3/18
Gross Alpha Statistical Summary 197 Participants
The known value of this nuclide is 27.5 pCi/1 with an expected precision of 6.9; the control limits
are 15.5 to 39.5; the warning regions are 15.5 to 19.5 and 35.5 to 39.5
23(11.7 %) Failed to respond
33(16.8 %) Out of control'
but not an outlier
Statistic
. 81(41.1 %) Within all limits
Respondents
- 6O(3O.5 %) 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
19.75
5.46
29.76
27.62
-28.17
-1.42
19.32
-29.76
-1.50
Grand Avg 19.75
5.46
29.76
27.62
-28.17
-1.42
19.32
-29.76
-1.50
33(19.O %) More than 3 norm. S.D. «t
6O(34.5 %) Between 2 and 3 norm. S.D
, 35(20.1 %) Within 1 norm. S.D.
of known value
•46(26.4 %) Between 1 and 2 norm. S.D.
-------
f • 1
4/18 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995
Gross Alpha
Lab Res. 1
A
AE
AF
IAH
AJ
AK
AL
AN
AP
AR
AU
AW
AZ
BA
BB
BC
BG
BH
BI
BK
BL
BM
BN
BO
C
CA
CE
CG
CJ
CK
CO
CP
CQ
cs
ex
D
DB
DD
DE
DH
DI
DM
DO
DR
DS
21.5
34.0
16.1
17.4
15.3
22.9
29.8
21.2
31.9
17.0
18.6
27.7
17.6
16.4
20.7
16.0
19.8
17.0
20.2
35.8
26.7
25.9
25.7
19.4
18.8
19.5
15.3
17.0
24.6
18.1
15.0
17.0
27.0
25.0
20.6
23.3
16.9
20.1
17.3
22.6
17.0
21.0
12.8
Res. 2
24.7
31.4
15.5
18.6
15.9
21.6
27.9
23.6
34.7
14.0
19.4
24.3
17.2
17.9
14.7
15.0
22.0
15.0
20.6
36.6
26.3
26.4
22.5
18.3
14.0
18.8
19.7
18.0
25.1
14.5
13.0
15.2
30.9
9.7
18.6
23.5
15.8
20.2
18.4
21.7
19.0
16.0
12.5
Res. 3
24.4
32.2
15.7
18.7
16.2
20.2
29.5
19.0
26.4
16.0
20.2
26.3
18.8
16.0
16.0
15.0
20.7
17.0
20.4
31.2
25.2
26.6
20.7
19.9
16.4
22.3
21.7
20.0
21.2
14.2
16.0
16.2
28.1
24.4
19.0
24.0
20.2
20.3
16.6
21.8
25.0
17.0
12.4
• s No data submitted
0 s
'J'
Insufficient data
X s
Exper. Rng anal Normalized deviation
Sigma (R + SR) Average (grand-avg) (known) Tag
1.77
1.33
0.31
0.72
0.46
1.35
1.02
2.30
4.22
1.53
0.80
1.71
0.83
1.00
3.16
0.58
1.11
1.15
0.20
2.91
0.78
0.36
2.53
0.82
2.40
1.85
3.27
1.53
2.12
2.17
1.53
0.90
2.01
8.67
1.06
0.36
2.29
0.10
0.91
0.49
4.16
265
0.21
0.274
0.223
0.051
0.111
0.077
0.231
0.163
0.394
0.711
0.257
0.137
0.291
0.137
0.163
0.514
0.086
0.188
0.171
0.034
0.462
0.128
0.060
0.428
0.137
0.411
0.300
0.548
0.257
0.334
0.334
0.257
0.154
0.334
1.590
0.171
0.060
0.377
0.017
0.154
0.077
0.685
0.428
0.034
23.53
32.53
15.77
18.23
15.80
21.57
29.07
21.27
31.00
15.67
19.40
26.10
17.87
16.77
17.13
15.33
20.83
16.33
20.40
34.53
26.07
26.30
22.97
19.20
16.40
20.20
18.90
18.33
23.63
15.60
14.67
16.13
28.67
19.70
19.40
23.60
17.63
20.20
17.43
22.03
20.33
18.00
12.57
TAG SYMBOLS
Determined
to be an
outlier
0.95
3.21
-1.00
-0.38
-0.99
0.45
2.34
0.38
2.82
-1.03
-0.09
1.59
-0.47
-0.75
-0.66
-1.11
0.27
-0.86
0.16
3.71
1.58
1.64
0.81
-0.14
-0.84
0.11
-0.21
-0.36
0.97
-1.04
-1.28
-0.91
2.24
-0.01
-0.09
0.97
-0.53
0.11
-0.58
0.57
0.15
-0.44
-1.80
IT = Above
II = Below
-1.00
1.26
-2.95
•
-2.33
-2.94
-1.49
0.39
-1.56
0.88
-2.97 '
-2.03
-0.35
-2.42
-2.69
-2.60
-3.05 II
-1.67
-2.80
-1.78
1.77
-0.36
-0.30
-1.14
-2.08
-2.79
-1.83
-2.16
-2.30
-0.97
-2.99
-3.22 II
-2.85
0.29
-1.96
-2.03
-0.98
-2.48
-1.83
-2.53
-1.37
,- • •
-1.80
-2.38
-3.75 II
control limit
control limit
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995 5/18
Gross Alpha
Lab Res. 1
DT
DZ
E
EB
EL
EN
EO
ER
EV
EW
EX
FF
FJ
FL
FN
FZ
GE
GQ
GT
GZ
HI
HK
HL
HP
I
1C
ID
J
JE
JG
JM
JN
JP
JQ
JS
JY
K
KC
KE
KH
KT
KX
L
LF
LL
• =
0 s
19.6
19.1
20.7
24.2
14.4
13.3
16.0
22.5
18.6
24.6
20.0
26.6
23.0
15.3
13.0
22.3
14.3
26.5
19.0
20.1
16.9
23.0
24.2
19.9
17.1
31.9
17.0
12.0
17.3
17.6
21.4
20.9
19.9
23.1
28.0
22.0
18.0
10.6
14.0
27.6
Res. 2
20.4
19.7
20.2
24.4
14.1
10.9
17.0
23.3
16.6
23.2
20.0
25.3
13.0
14.6
15.0
*
22.3
14.6
25.6
18.0
18.6
13.0
17.9
24.7
20.1
15.4
30.0
\ V v.
18.3
13.0
20.0
17.2
24.8
18.1
14.5
25.0
31.7
22.0
19.0
11.6
13.0
32.1
Res. 3
21.9
18.4
21.4
25.7
13.2
14.6
17.0
21.8
16.2
24.3
19.0
23.1
14.0
16.9
15.0
21.7
11.8
25.3
16.0
19.9
12.8
15.3
25.6
19.1
16.8
26.6
18.5
13.0
18.5
16.1
22.9
18.9
20.1
24.3
28.7
21.0
17.0
11.4
10.0
26.3
No data submitted
Insufficient
data
x =
Exper.
Sigma
1.17
0.65
0.60
0.81
0.62
1.88
0.58
0.75
1.29
0.74
0.58
1.77
5.51
1.18
1.15
0.35
1.54
0.62
1.53
0.81
2.31
3.92
0.71
0.53
0.91
2.69
0.81
0.58
1.35
0.78
1.70
1.44
3.18
0.96
1.97
0.58
1.00
0.53
2.08
3.04
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tng
0.197
0.111
0.103
0.128
0.103
0.317
0.086
0.128
0.205
0.120
0.086
0.300
0.856
0.197
0.171
0.051
0.240
0.103
0.257
0.128
0.351
0.659
0.120
0.086
0.146
0.454
0.128
0.086
0.231
0.128
0.291
0.240
0.479
0.163
0.317
0.086
0.171
0.086
0.342
0.497
20.63
19.07
20.77
24.77
13.90
12.93
16.67
22.53
17.13
24.03
19.67
25.00
16.67
15.60
14.33
22.10
13.57
25.80
17.67
19.53
14.23
18.73
24.83
19.70
16.43
29.50
17.93
12.67
18.60
16.97
23.03
19.30
18.17
24.13
29.47
21.67
18.00
11.20
12.33
28.67
TAG SYMBOLS
Determined
to be an
outlier
0.22
-0.17
0.25
1.26
-1.47
-1.71
-0.78
0.70
-0.66
1.07
-0.02
1.32
-0.78
-1.04
-1.36
0.59
-1.55
1.52
-0.52
-0.06
-1.39
-0.26
1.27
-0.01
-0.83
2.45
-0.46
-1.78
-0.29
-0.70
0.82
-0.11
-0.40
1.10
2.44
0.48
-0.44
-2.15
-1.86
2.24
IT = Above
U s Below
-1.72
-2.12
-1.69
-0.69
-3.41 JJ.
-3.66 U
-2.72
-1.25
-2.60
-0.87
*'
-1.97
-0.63
-2.72
-2.99
-3.31 li
: «,
-1.36
-3.50 tt
-0.43
-2.47
-2.00
-3.33 Ji
-2.20
-0.67
-1.96
-2.78
0.50
*: •
-2.40
-3.72 fl.
-2.23
-2.64
-1.12
-2.06
• .
-2.34
•
-0.85
0.49
-1.46
-2.38
-4.09 U
-3.81 U
0.29
control limit
control limit
-------
6/18 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995
Gross Alpha
Lab
LR
LT
M
MA
MF
MQ
MV
MX
MY
N
NA
NB
NE
NJ
':NK
NO
NP
NT
O
OA
OB
OF
OS
OX
OY
OZ
P
PB
PG
PM
PQ
PR
PV
Q
QC
OP
QQ
QT
QU
QW
QX
QZ
R
RB
RD
• =
0 =
Res. 1
7.2
15.6
38.0
26.5
24.0
17.9
28.0
24.0
18.6
11.2
14.7
17.1
28.9
18.4
26.0
21.0
23.4
22.2
19.0
27.1
28.8
18.3
32.1
20.4
25.8
13.0
19.5
32.0
13.1
15.8
15.9
15.8
20.2
19.1
13.6
22.4
19.3
23.5
21.8
13.6
21.0
Res. 2
7.8
12.8
35.0
27.0
22.0
15.0
32.7
28.0
20.9
12.6
13.1
*
18.8
30.9
18.1
24.8
23.0
23.6
17.4
18.0
21.9.
33.7
20.4
33.9
21.8
22.8
12.0
21.8
30.0
23.1
13.5
13.5
15.6
20.3
21.1
15.0
19.0
19.6
26.1
23.7
11.8
19.0
Res. 3
5.9
13.5
42.0
26.2
26.0
14.0
27.5
32.0
21.1
12.0
13.9
18.6
30.6
17.8
24.5
19.0
22.6
13.7
21.0
17.0
33.2
20.6
34.2
20.1
25.3
12.0
23.1
27.0
19.9
18.5
12.1
17.6
20.2
24.9
16.4
25.8
20.9
22.1
24.5
12.6
14.0
No data submitted
Insufficient
data
x =
Exper.
Sigma
0.97
1.46
3.51
0.40
2.00
2.03
2.87
4.00
1.39
0.70
0.80
.„ ' • •
0.93
1.08
0.30
0.79
2.00
0.53
4.26
1.53
5.05
2.70
1.27
1.14
0.91
1.61
0.58
1.82
2.52
5.11
2.50
1.92
1.10
0.06
2.95
1.40
3.40
0.85
2.03
1.39
0.90
3.61
Rng anal
(R + SR)
0.163
0.240
0.599
0.068
0.342
0.334
0.445
0.685
0.214
0.120
0.137
0.146
0.171
0.051
0.128
0.342
0.086
0.728
0.257
0.865
0.419
0.197
0.180
0.146
0.257
0.086
0.308
0.428
0.856
0.428
0.325
0.171
0.009
0.497
0.240
0.582
0.137
0,342
0.231
0.154
0.599
Normalized deviation
Average
6.97
13.97
38.33
26.57
24.00
15.63
29.40
28.00
20.20
11.93
13.90
-
18.17
30.13
18.10
25.10
21.00
23.20
17.77
19.33
22.00
31.90
19.77
33.40
20.77
24.63
12.33
21.47
29.67
18.70
15.93
13.83
16.33
20.23
21.70
15.00
22.40
19.93
23.90
23.33
12.67
18.00
TAG SYMBOLS
Determined
to be an outlier
(grand-avg) (known) Tag
-3.21
-1.45
4.66
1.71
1.07
-1.03
2.42
2.07
0.11
-1.96
-1.47
, -' <
-0.40
2.61
-0.42
1.34
0.31
0.86
-0.50
-0.11
0.56
3.05
0.00
3.43
0.25
1.22
-1.86
0.43
2.49
-0.26
-0.96
-1.49
-0.86
0.12
0.49
-1.19
0.66
0.04
1.04
0.90
-1.78
-0.44
IT = Above
•!!• = Below
-5.15 U
-3.40 U
2.72
<",'' '' ' •- ,'
-0.23
-0.88
-2.98
0.48
»
0.13
-1.83
-3.91 Ji
•
-3.41 U
'"" " ' »
-2.34
0.66
-2.36
-0.60
-1.63
-1.08
-2.44
-2.05
-1.38
1.10
-1.94
1.48
-1.69
-0.72
-3.81 li
-1.51
0.54
-2.21
-2.90
-3.43 JJ.
-2.80
-1.82
-1.46
-3.14 U
-1.28
-1.90
-0.90
-1.05
-3.72 U
-2.38
control limit
control limit
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995 7/18
Gross Alpha
Lab Res. 1
RE
RG
RH
RI
RJ
RR
RU
RV
RW
RZ
S
sc
SD
SF
SI
SL
SM
SN
SO
SR
ss
su
sx
sz
T
TC
TD
TE
TG
TH
TI
TL
TN
TO
TQ
TW
TY
U
UA
UE
UN
UP
UQ
UW
UY
• =
0 s
22.0
18.7
17.2
30.0
15.0
19.1
25.8
17.8
17.9
22.5
19.6
20.4
21.9
29.3
11.5
22.3
25.0
25.2
17.5
23.4
11.6
24.3
15.7
11.3
14.6
22.5
12.7
16.0
14.1
18.8
11.9
21.9
10.1
15.0
15.5
16.5
22.6
26.2
Res. 2
23.5
18.2
16.3
27.0
18.0
19.6
23.4
22.7
16.3
24.7
19.7
27.1
20.5
29.5
6.2
21.7
34.0
19.5
16.9
22.7
9.0
21.1
16.6
9.9
14.2
24.1
18.8
17.1
12.7
16.3
12.2
21.5
11.6
17.3
19.3
22.2
22.8
22.8
Res. 3
20.2
20.9
20.8
27.0
17.0
19.4
25.0
20.6
20.1
21.8
19.8
23.1
22.3
28.9
10.7
21.5
31.0
20.5
18.3
21.3
10.6
22.1
10.6
8.3
15.0
27.7
17.3
17.4
13.4
21.1
11.8
16.2
10.9
14.6
17.7
19.8
20.5
23.0
No data submitted
Insufficient
data
X 3
Exper.
Sigma
1.65
1.44
2.38
1.73
1.53
0.25
1.22
2.46
1.91
1.51
0.10
3.37
0.95
0.31
2.86
0.42
4.58
3.04
0.70
1.07
1.31
1.64
• -•: ->-,;.;,:,;.• . . • . .-• , :•: *•_•
3.24
1.50
0.40
2.66
3.18
0.74
0.70
2.40
0.21
3.18
0.75
1.46
1.91
2.86
1.27
1.91
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known)
0.282
0.231
., •..,,:
0.385
0.257
0.257
0.043
0.205
0.419
0.325
0.248
0.017
0.574
0.154
0.051
0.454
0.068
0.770
0.488
0.120
0.180
0.223
0.274
- •• - • •..••!•
0.514
0.257
0.068
0.445
0.522
0.120
0.120
0.411
0.034
0.488
0.128
0.231
0.325
0.488
0.197
0.291
21.90
19.27
•' .:• ' '. . ,:*/:.' .';;..••'. ':•>:&
18.10
'
28.00
16.67
19.37
24.73
20.37
18.10
23.00
19.70
23.53
21.57
29.23
9.47
21.83
30.00
21.73
17.57
22.47
x
10.40
22.50
14.30
9.83
14.60
24.77
16.27
16.83
13.40
18.73
11.97
19.87
10.87
15.63
17.50
19.50
21.97
24.00
TAG SYMBOLS
Determined
to be an
outlier
0.54
-0.12
•',: : :'-'•:<••:
-0.42
s
2.07
-0.78
-0.10
1.25
0.15
-0.42
0.81
-0.01
0.95
0.45
2.38
-2.58
0.52
2.57
0.50
-0.55
0.68
-2.35
0.69
-1.37
-2.49
-1.29
1.26
-0.88
-0.73
-1.60
-0.26
-1.95
0.03
-2.23
-1.03
-0.57
-0.06
0.56
1.07
ft 3 Above
-1.41
-2.07
':••.. •:*•';
-2.36
0.13
-2.72
-2.04
-0.69
-1.79
-2.36
-1.13
-1.96
-1.00
-1.49
0.44
-4.53
-1.42
0.63
-1.45
-2.49
-1.26
-4.29
-1.26
•' ':"::?~'':
-3.31
-4.43
-3.24
-0.69
-2.82
-2.68
-3.54
-2.20
-3.90
-1.92
-4.18
-2.98
-2.51
-2.01
-1.39
-0.88
control
U s Below control
Tag
' ;•
«
• .
Ji
•
U
'. •
•
u
n
n
li
u
u
" •
limit
limit
-------
8 / 18 CRD
Gross Alpha
Lab Res. 1
VA 22.8
VG 15.8
VH 14.3
VI 16.3
VJ 16.0
vo
VT 18.6
W 24.9
IWD
WE 12.0
WF 13.2
WH 10.6
WJ
WK
WN 12.0
X 16.0
Average
6.97
9.47
9.57
9.83
10.40
10.87
11.20
11.77
11.87
11.93
11.97
12.10
12.33
12.33
12.57
12.67
12.67
12.93
13.37
13.40
13.57
13.83
13.90
13.90
13.97
-LV Performance Evaluation: Gross Alpha-
Res. 2
19.5
15.4
15.3
12.0
17.4
16.4
29.4
12.3
11.0
8.4
11.4
13.9
Tag
li
li
li
li
11
li
li
li
li
li
11
.11
li
Ji
li
li
li
li
li
li
li
li
li
li
li
Res. 3
13.5
16.8
17.3
11.8
16.0
17.5
22.5
A
11.3
12.1
9.7
11.9
14.0
Data
Lab
LR
SN
WH
TH
T
UA
L
WN
WE
NB
TY
WF
PM
LF
DS
RB
JM
EN
VI
TQ
GT
QC
NJ
EL
LT
Exper.
Sigma
4.71
0.72
1.53
2.54
0.81
1.10
3.50
0.51
1.10
1.11
0.32
1.18
Rnganal
(R + SR)
0.796
0.120
0.257
0.385
0.120
0.188
0.591
0.086
0.188
0.188
0.051
0.180
Beta in Water, 21-Jul-1995
Average
18.60
16.00
15.63
13.37
16.47
17.50
25.60
11.87
12.10
9.57
11.77
14.63
Normalized deviation
(grand-avg) (known)
-0.29 -2.23
-0.94 -2.89
-1.03 -2.98
-1.60 -3.55
-0.83 -2.77
-0.57 -2.51
1.47 -0.48
-1.98 -3.92
-1.92 -3.87
-2.56 -4.50
-2.01 -3.95
-1.29 -3.23
^.
Tag
li
»' '
•
Ji'
li
li
, .
*
ii
ii
sorted by Laboratory Average
Average
• = No data submitted
0 = Insufficient data
X
14.23
14.30
14.33
14.60
14.63
14.67
15.00
15.33
15.60
15.60
15.63
15.63
15.63
15.67
15.77
15.80
15.93
16.00
16.13
16.27
16.33
16.33
16.40
16.43
16.47
Tag
li
li
li
li
li
li
li
li
, _
Lab
HL
TG
FZ
n
X
CP
QU
BG
FN
CO
VH
UE
MV
AU
AF
AK
Q
VG
CQ
TN
QP
BI
CA
ID
VJ
Average Tag
TAG SYMBOLS
= Determined to be an outlier
16.67
16.67
16.67
16.77
16.83
16.97
17.13
17.13
17.43
17.50
17.50
17.57
17.63
17.67
17.77
17.87
17.93
18.00
18.00
18.00
18.10
18.10
18.10
18.17
18.17
IT = Above control
li = Below control
Lab
RV
FL
EO
BB
TO
JP
EV
BC
DH
VT
UN
su
DD
ffl
OF
BA
JG
RD
KX
DR
SC
RI
NT
NO
K
limit
limit
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995 9
Gross Alpha
/18
Data sorted by Laboratory Average
Average Tag
18.23
18.33
18.60
18.60
18.70
18.73
18.73
18.90
19.07
19.20
19.27
19.30
19.33
19.37
19.40
19.40
19.50
19.53
19.67
19.70
19.70
19.70
19.77
19.87
19.93
20.20
20.20
20.20
20.23
20.33
20.37
20.40
20.63
% responding labs
o - J
° i i T
-6 -4
Lab
AJ
CJ
VA
JN
PV
TW
HP
CG
DZ
C
RG
JS
OS
RW
D
AW
UP
HK
FF
CX
SF
1C
oz
u
QX
CE
NA
DE
QQ
DO
S
BK
DT
Average Tag
20.77
20.77
20.83
21.00
21.27
21.47
21.57
21.57
21.67
21.70
21.73
21.83
21.90
21.97
22.00
22.03
22.10
22.40
22.47
22.50
22.53
22.97
23.00
23.03
23.20
23.33
23.53
23.53
23.60
23.63
23.90
24.00
24.00
Lab
PB
E
BH
OA
AP
PQ
SL
AL
KT
QT
SS
SO
RE
UQ
OX
DI
GQ
QW
sx
TD
ER
BO
SD
JQ
OB
R
SI
A
DB
CK
QZ
UW
MQ
Average Tag
24.03
24.13
24.63
24.73
24.77
24.77
24.83
25.00
25.10
25.60
25.80
26.07
26.10
26.30
26.57
28.00
28.00
28.67
28.67
29.07
29.23
29.40
29.47
29.50
29.67
30.00
30.13
31.00
31.90
32.53
33.40
34.53
38.33
Lab
EW
KE
PG
RZ
TL
EB
I
FJ
O
W
GZ
BM
AZ
BN
MF
RR
N
LL
CS
AN
SM
MX
KH
J
PR
SR
NP
AR
OY
AE
P
BL
M
Frequency distribution
JJll
IJ. •
Illtlllllll. ....
TT i i i
-2 0
• _ — _
1 I 1 1 I
+2 +4
+6
Normalized deviation of the mean from the known value
• = No data submitted
0 = Insufficient data
TAG SYMBOLS
x = Determined to be an
1T s Above control
outlier li = Below control
limit
limit
-------
10/18 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995
Gross Alpha
% responding labs Frequency distribution
O-1—r
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995 11/18
Gross Beta Statistical Summary 197 Participants
The known value of this nuclide is 19.4 pCi/1 with an expected precision of 5.0; the control limits
are 10.7 to 28.1; the warning regions are 10.7 to 13.6 and 25.2 to 28.1
2O(10.2 %) Failed to respond -..
7(3.6 %) Outliers '
9(4.6 %) Out of control '
but not an outlier
Statistic
. 140(71.1 %) Within all limits
Respondents
* 21 (1O.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
31.17
105.86
11206.04
339.67
60.65
0.11
21.87
12.71
0.02
Grand Avg 21.67
3.88
15.08
17.92
11.68
0.58
21.70
11.86
0.59
16(9.O %) More than 3 norm. S.D.
21 (11.9 %) Between 2 and 3 norm. S.D.
O(45.2 %) Within 1 norm. S.D.
of known value
- 6O(33.9 %) Between 1 and 2 norm. S.D.
-------
12/18 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995
Gross Beta
Lab
A
AE
AF
AH
AJ
AK
AL
AN
AP
AR
AU
AW
AZ
BA
BB
BC
BG
BH
BI
BK
BL
BM
BN
BO
C
CA
CE
CG
CJ
CK
CO
CP
CQ
CS
CX
D
DB
DD
DE
DH
DI
DM
DO
DR
DS
• =
0 =
Res. 1
21.6
13.0
22.2
21.0
21.4
20.5
21.9
15.9
20.9
35.2
20.0
27.1
14.9
20.3
23.2
16.1
17.0
20.7
24.0
23.8
23.2
27.2
20.7
23.1
21.8
16.1
22.2
20.1
21.0
25.2
16.1
28.0
25.4
24.7
29.7
23.8
23.7
25.5
16.1
21.9
30.7
19.9
23.0
21.0
19.4
Res. 2
23.6
13.3
25.9
22.0
26.5
20.0
18.8
15.4
21.5
33.0
21.0
26.5
15.1
20.7
23.2
20.0
18.0
21.2
24.0
24.1
22.1
27.5
21.8
19.1
21.6
17.9
21.9
14.2
18.0
25.4
18.9
27.0
23.0
23.8
19.9
25.8
23.2
25.0
16.2
22.8
31.7
27.7
20.0
24.0
19.0
Res. 3
22.7
13.8
24.9
21.8
24.6
20.4
18.1
16.7
22.2
29.6
22.0
25.1
17.2
19.3
21.3
19.4
17.0
22.4
24.0
25.3
20.3
25.6
22.1
20.3
22.4
16.4
21.4
18.2
19.0
27.2
16.3
27.0
21.4
20.9
20.5
24.0
23.2
22.5
16.3
21.4
32.3
22.5
21.0
22.0
18.4
No data submitted
Insufficient
data
x =
Exper.
Sigma
1.00
0.40
,1.91
0.53
2.58
0.26
2.02
0.66
0.65
2.82
1.00
1.03
1.27
0.72
1.10
2.10
0.58
0.87
0.00
0.79
1.46
1.02
0.74
2.05
0.42
0.96
0.40
3.01
1.53
1.10
1.56
0.58
2.01
1.99
5.49
1.10
0.29
1.61
0.10
0.71
0.81
3.97
1.53
1.53
0.50
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.236
0.095
0.437
0.118
0.602
0.059
0.449
0.154
0.154
0.662
0.236
0.236
0.272
0.165
0.224
0.461
0.118
0.201
0.000
0.177
0.343
0.224
0.165
0.473
0.095
0.213
0.095
0.697
0.354
0.236
0.331
0.118
0.473
0.449
1.300
0.236
0.059
0.354
0.024
0.165
0.189
0.921
0.354
0.354
0.118
22.63
13.37
24.33
21.60
24.17
20.30
19.60
16.00
21.53
32.60
21.00
26.23
15.73
20.10
22.57
18.50
17.33
21.43 .
24.00
24.40
21.87
26.77
21.53
20.83
21.93
16.80
21.83
17.50
19.33
25.93
17.10
27.33
23.27
23.13
23.37
24.53
23.37
24.33
16.20
22.03
31.57
23.37
21.33
22.33
18.93
TAG SYMBOLS
Determined
to be an
outlier
0.33
-2.88
0.92
-0.02
0.87
-0.47
-0.72
-1.96
-0.05
3.79
-0.23
1.58
-2.06
-0.54
0.31
-1.10
-1.50
-0.08
0.81
0.95
0.07
1.77
-0.05
-0.29
0.09
-1.69
0.06
-1.44
-0.81
1.48
-1.58
1.96
0.55
0.51
0.59
0.99
0.59
0.92
-1.89
0.13
3.43
0.59
-0.12
0.23
-0.95
Tt = Above
11 = Below
1.12
-2.09
1.71
0.76
1.65
0.31
0.07
-1.18
0.74
4.57 fl
0.55
2.37
-1.27
0.24
1.10
-0.31
-0.72
0.70
1.59
1.73
0.85
2.55
0.74
0.50
0.88
-0.90
0.84
-0.66
-0.02
2.26
-0.80
2.75
1.34
1.29
1.37
1.78
1.37
1.71
-1.11
0.91
4.21 tl
1.37
0.67
1.02
-0.16
control limit
control limit
-------
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995 13/18
Gross Beta
Lab
DT
DZ
E
EB
EL
EN
EO
ER
EV
EW
EX
FF
FJ
FL
1 FN
FZ
GE
GQ
GT
GZ
HI
HK
HL
HP
I
1C
ID
J
JE
JG
JM
JN
JP
JQ
JS
JY
K
kc
KE
KH
KT
KX
L
LF
LL
• =
0 =
Res. 1
23.0
19.7
25.3
21.5
20.8
25.2
24.0
24.4
24.6
23.0
35:4
13.0
35.0
19.0
22.0
19.3
20.0
16.6
27.0
22.0
20.4
17.3
27.4
24.7
24.0
20.6
21.9
20.0
20.5
20.2
20.3
20.5
26.2
26.2
24.2
12.0
23.0
27.6
21.0
22.2
Res. 2 Res. 3
22.9
20.8
25.9
22.4
20.8
25.4
26.0
22.4
23.2
•• ... •:;.-, • ;•., .? •: ;,-.
22.0
24.0
">-'-36;3 •;'r';: ;
18.0
22.0
19.5
15.6
28.4
22.0
25.0
19.9
18.2
24.2
23.7
23.3
20.4
20.7
23.0
21.6
18.8
24.5
22.1
-
24.0
24.6
20.9
10.0
20.0
27.6
17.0
20.4
22.1
21.0
23.4
24.7
20.4
29.3
23.0
19.8
24.3
23.0
3L7
16.0
40,2
21.0
23.0
19.6
18.5
22.0
26.0
25.0
22.8
18.3
24.3
24.6
22.7
20.7
20.0
24.0
23.0
16.7
23.2
21.9
25.1
25.5
22.2
8.0
21.0
27.3
24.0
19.2
No data submitted
Insufficient
data
x =
Exper.
Sigma
0.49
0.70
1.31
1.65
0.23
2.31
1.53
2.31
0.74
0.58
4.21
5.69
V2#ir;
1.53
0.58
0.15
2.24
5.91
2.65
1.73
1.55
0.55
1.82
0.55
0.65
0.15
0.96
2.08
1.25
1.76
2.15
0.87
1.10
0.80
1.66
2.00
1.53
0.17
3.51
1.51
Rng anal
(R + SR) Average
0.106
0.154
0.295
0.378
0.047
0.484
0.354
0.543
0.165
0.118
0,992
1.570
0,614
0.354
0.118
0.035
0.520
1.750
0,591
0.354
0.343
0.118
0.378
0.118
0.154
0.035
0.224
0.473
0.295
0.413
0.496
0.189
0.260
0.189
0.390
0.473
0.354
0.035
0.827
0.354
22.67
20.50
24.87
22.87
20.67
26.63
24.33
;>.. 4;,,,:
22.20
24.03
22.67
35.73
17.67
37.17
19.33
22.33
19.47
18.03
22.33
25.00
24.00
21.03
17.93
25.30
24.33
23.33
20.57
20.87
22.33
21.70
18.57
22.67
21.50
25.10
25.43
22.43
10.00
21.33
27.50
20.67
20.60
TAG SYMBOLS
Determined
to be an outlier
Normalized deviation
(grand-avg) (known) Tag
0.35
-0.40
1.11
0.42
-0.35
1.72
0.92
.;.;• . ;;. .;.:. - , - ,-....
0.18
0.82
0.35
4.87
-1.39
5.37" 1
-0.81
0.23
-0.76
-1.26
0.23
1.15
0.81
-0.22
-1.29
1.26
0.92
0.58
-0.38
-•:.... ;-. • ;,
-0.28
0.23
0.01
-1.07
0.35
-0.06
1.19
1.30
0.27
-4.04
-0.12
2.02
-0.35
-0.37
ft s Above
tt = Below
1.13
0.38
1.89
1.20
0.44
2.51
1.71
0.97
1.61
''''..::'. . :''«
1.13
5,66 x
-0.60
iS6.i6/'' x .
-0.02
1.02
0.02
-0.47
1.02
1.94
1.59
0.57
-0.51
2.04
1.71
1.36
0.40
;.,:;::,;;;...::,,._. . . '
0.51
1.02
0.80
-0.29
1.13
0.73
••
1.97
*
2.09
1.05
-3.26 U
0.67
2.81
0.44
0.42
control limit
control limit
-------
14 / 18 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995
Gross Beta
Lab
LR
LT
M
MA
MF
MQ
MV
MX
MY
N
NA
NB
NE
NJ
NK
NO
'•:NP
NT
O
OA
OB
OF
OS
OX
OY
OZ
P
PB
PG
PM
PQ
PR
PV
Q
QC
QP
QQ
QT
QU
QW
QX
QZ
R
RB
RD
• 3
.0,
Res. 1
21.1
23.4
18.0
12.0
21.5
13.0
22.7
1660.1
21.0
26.0
91.7
29.7
19.7
35.6
21.9
20.8
23.0
26.2
15.5
22.0
19.6
16.0
13.4
22.8
20.8
24.4
22.0
21.6
24.0
25.5
18.0
16.9
19.0
24.6
22.6
17.2
38.2
27.4
20.8
21.0
16.2
24.0
Res. 2
18.8
26.0
15.0
15.0
20.6
15.0
21.7
1210.7
19.0
24.5
98.2
29.6
23.1
42.4
21.1
22.3
20.0
22.4
1^.4
23.0
20.0
21.6
17.7
22.8
20.2
21.2
23.0
21.6
22.0
21.4
21.6
16.5
18.0
24.7
19.9
20.0
41.7
27.4
21.0
24.0
17.0
17.0
Res. 3
21.9
24.6
21.0
15.0
22.9
16.0
17.7
1402.2
20.0
22.6
95.0
29.5
25.7
3L8
21.5
20.5
22.0
22.4
18.7
23.0
20.2
20.0
15.9
21.0
21.8
23.6
23.0
20.0
22.0
26.5
23.4
16.7
17.5
24.7
27.4
22.8
40.9
27.4
20.5
25.8
16.5
22.0
No data submitted
Insufficient
data
x =
Exper.
Sigma
1.61
1.30
3.00
1.73
1.16
1.53
2.65
220.30
1.00
1.70
3.25
0.10
3.01
5.37
0.40
0.96
1.53
2.19
2.08
0.58
0.31
2.88
2.16
1.04
0.81
1.67
0.58
0.92
1.15
2.70
2.75
0.20
0.76
0.06
3.80
2.80
1.83
0.01
0.25
2.42
0.40
3.61
Rnganal
(R + SR) Average
0.366
0.307
0.709
0.354
0.272
0.354
0.591
97.967
0.236
0.402
0.768
0.024
0.709
1.480
0.095
0.213
0.354
0.449
0.461
0.118
0.071
0.662
0.508
0.213
0.189
0.378
0.118
0.189
0.236
0.602
0.638
0.047
0.177
0.012
0.886
0.662
0.413
0.000
0.059
0.567
0.095
0.827
20.60
24.67
18.00
14.00
21.67
14.67
20.70
1421.00
20.00
24.37
94.9,7
-
29.60
22.83
36.60
21.50
21.20
21.67
23.67
17.87
22.67
19.93
19.20
15.67
22.20
20.93
23.07
22.67
21.07
22.67
24.47
21.00
16.70
18.17
24.67
23.30
20.00
40.27
27.40
20.77
23.60
16.57
21.00
TAG SYMBOLS
Determined
to be an
outlier
Normalized deviation
(grand-avg) (known) Tag
-0.37
1.04
-1.27
-2.66
0.00
-2.42
-0.33
0.42
1.82
-0.48
-1.87
0.79
-1.64
0.45
48474 ,;., 485.53 x ,
-0.58
0.94
25.39
2.75
0.40
517 °
-0.06
-0.16
0.00
0.69
-1.32
0.35
-0.60
-0.85
-2.08
0.18
-0.25
0.48
0.35
-0.21
0.35
0.97
-0.23
-1.72
-1.21
1.04
0.57
-0.58
6,44
1.99
-0.31
0.67
-1.77
-0.23
It s Above
li = Below
•'
0.21
1.72
26.18 x
•
3.53 It
•
1.19
5.96 x
0.73
0.62
0.79
1.48
-0.53
1.13
0.18
-0.07
-1.29
0.97
0.53
1.27
1.13
0.58
1.13
1.76
0.55
-0.94
-0.43
1.82
1.35
0.21
7.23 x
2.77
0.47
1.45
-0.98
0.55
control limit
control limit
y
-------
1
CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995 15/18
Gross Beta
Lab
RE
RG
KH
RI
RJ
RR
RU
RV
RW
RZ
S
sc
SD
SF
SI
SL
SM
SN
SO
SR
ss
su
sx
sz
T
TC
TD
TE
TG
TH
TI
TL
TN
TO
TQ
TW
TY
U
UA
UE
UN
UP
UQ
UW
UY
Res. 1
24.8
19.0
24.3
30.6
28.0
25.7
26.3
23.3
16.3
14.4
17.0
17.7
24.5
24.4
22.9
19.7
24.0
21.9
17.9
29.3
21.9
9.9
24.0
19.6
23.8
20.5
26.6
36.2
18.3
10.5
21.0
23.6
15.0
21.7
34.8
23.1
20.8
28.6
20.4
Res. 2
28.2
19.3
- . '••:•• . .
27.9
29.4
29.0
21.0
27.2
24.6
21.9
14.7
19.4
17.9
25.7
23.2
15.9
19.4
27.0
19.8
19.1
29.0
18.9
12.3
26.0
18.0
24.3
21.6
26.9
31.6
13.4
10.3
21.5
22.8
16.0
22.2
23.0
18.8
23.0
20.2
20.1
Res. 3
27.9
20.7
•. 1. • - .- .....
22.1
30.6
27.0
23.4
26.1
22.7
22.7
12.8
19.6
18.1
23.5
23.3
19.9
19.5
25.0
21.5
18.2
28.2
21.3
13.5
21.5
18.2
23.3
23.2
27.0
26.3
15.9
15.8
22.6
22.7
17.0
22.1
24.3
23.9
20.4
26.4
21.4
• = No data submitted
0 3
Insufficient
data
X 3
Exper.
Sigma
1.88
0.91
2.93
0.69
1.00
2.35
0.59
0.97
3.49
1.02
1.45
0.20
1.10
0.67
3.51
0.15
1.53
1.12
0.62
0.57
1.59
• •:.i-:-,~ -~:'^y:':-
1.83
. - ,;;:. .
2.25
0.87
0.50
1.36
0.21
4.95
2.45
3.12
0.82
0.49
1.00
0.26
6.47
2.74
1.40
4.36
0.68
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.402
0.201
0.685
0.142
0.236
0.555
0.130
0.224
0.756
0.224
0.307
0.047
0.260
0.142
0.827
0.035
0.354
0.248
0.142
0.130
0.354
0.425
0.532
0.189
0.118
0.319
0.047
1.323
0.579
0.650
0.189
0.106
0.236
0.059
1.750
0.602
0.307
0.992
0.154
26.97
19.67
24.77
30.20
28.00
23.37
26.53
23.53
20.30
13.97
18.67
17.90
24.57
23.63
19.57
19.53
25.33
21.07
18.40
28.83
20.70
11.90
23.83
18.60
23.80
21.77
26.83
31.37
15.87
12.20
21.70
23.03
16.00
22.00
27.37
21.93
21.40
25.07
20.63
TAG SYMBOLS
Determined
to be an
outlier
1.84
-0.69
1.07
2.96
2.19
0.59
1.69
0.65
-0.47
-2.67
-1.04
-1.30
1.00
0.68
-0.73
-0.74
1.27
-0.21
-1.13
2.48
-0.33
-3.38
0.75
-1.06
0.74
0.03
1.79
3.36
-2.01
-3.28
0.01
0.47
-1.96
0.12
1.97
0.09
-0.09
1.18
-0.36
ft = Above
U. s Below
2.62
0.09
...-..' •
1.86
•
3.74 ft
-:_••-, ' -.-• v.
2.98
1.37
2.47
1.43
0.31
-1.88
-0.25
-0.52
1.79
1.47
0.06
0.05
2.06
0.58
-0.35
3.27 ft
•-' • •
0.45
• • •
-2.60
'<-" •• •
1.54
-0.28
1.52
0.82
2.57
4.15 ft
-1.22
-2.49
0.80
1.26
-1.18
0.90
2.76
0.88
0.69
1.96
0.43
control limit
control limit
-------
16/18 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995
Gross Beta
Lab Res. 1 Res. 2
VA 22.0 20.5
vc
VG 17.9 18.3
VH 31.4 27.1
VI 12.3 12.4
VJ 26.9 27.0
vo
VT 26.4 27.0
W 21.7 21.5
WD
WE 22.3 21.7
WF 170;0 169.3
WH 10.7 9.3
WK • ;'' ' * ., ;
WN - '"
X 17.8 17.9
Exper.
Res. 3 Sigma
17.9 2.07
18.9 0.50
26.1 2.82
12.8 0.26
22.3 2.69
26.7 0.30
19.3 1.33
20.0 1.19
162.2 4.32
9.9 0.70
17.3 0.32
Rng anal
(R + SR)
0.484
0.118
0.626
0.059
0.555
0.071
0.284
t :
0.272
0.921
0.165
•• v
0.071
Normalized deviation
Average (grand-avg) (known)
20.13 -0.53 0.25
18.37 -1.14 -0.36
28.20 2.26 3.05
12.50 -3.18 -2.39
25.40 1.29 2.08
26.70 1.74 2.53
20.83 -0.29 0.50
21.33 0.12 0.67
167.17 50.40 51.19
9.97 -4.05 -3.27
' ' • ! , ' / ' *s <,. "V
17.67 -1.39 -0.60
Tag
•
It
•
•
X
U
- *
1 •'
Data sorted by Laboratory Average
Average Tag
9.97 U
10.00 li
11.90
12.20
12.50
13.37
13.97
14.00
14.67
15.67
15.73
15.87
16.00
16.00
16.20
16.57
16.70
16.80
17.10
17.33
17.50
17.67
17.67
17.87
17.90
• = No data submitted
0 = Insufficient data
Lab
WH
KT
TD
TW
VI
AE
SD
MA
MQ
OZ
AZ
TQ
UA
AN
DE
RB
QC
CA
CO
BG
CG
X
FL
OF
SI
Average
17.93
18.00
18.03
18.17
18.37
18.40
18.50
18.57
18.60
18.67
18.93
19.20
19.33
19.33
19.47
19.53
19.57
19.60
19.67
19.93
20.00
20.00
20.10
20.13
20.30
Tag
TAG SYMBOLS
Lab
HP
M
GT
QP
VG
SU
BC
JP
TH
SF
DS
OY
FZ
CJ
GQ
SO
SN
AL
RG
OX
QU
N
BA
VA
SC
Average Tag
20.30
20.50
20.57
20.60
20.60
20.63
20.67
20.67
20.70
20.70
20.77
20.83
20.83
20.87
20.93
21.00
21.00
21.00
21.03
21.07
21.07
21.20
21.33
21.33
21.33
It 3 Above control
x 3 Determined to be an outlier U = Below control
Lab
AK
DZ
J
LR
LL
UY
LF
EL
T
MV
QZ
W
BO
JG
PB
RD
Q
AU
HL
SS
PQ
o
WE
KX
DO
limit
limit
-------
CRD-LV Performance Evaluation:
Gross Beta
Average Tag
21.40
21.43
21.50
21.50
21.53
21.53
21.60
21.67
21.67
21.70
21.70
21.77
21.83
21.87
21.93
21.93
22.00
22.03
22.20
22.20
22.33
22.33
22.33
22.33
22.43
22.57
22.63
22.67
22.67
22.67
22.67
22.67
22.67
22.83
% responding labs
10-
-6 -4
Data sorted by
Lab
UQ
BH
NT
JS
BN
AP
AH
OA
MF
TY
JN
TL
CE
BL
UP
C
UE
DH
P
EV
JM
GZ
GE
DR
KH
BB
A
PR
PM
OS
JQ
FF
DT
NO
Average
22.87
23.03
23.07
23.13
23.27
23.30
23.33
23.37
23.37
23.37
23.37
23.53
23.60
23.63
23.67
23.80
23.83
24.00
24.00
24.03
24.17
24.33
24.33
24.33
24.33
24.37
24.40
24.47
24.53
24.57
24.67
24.67
24.77
24.87
Gross Alpha-Beta in Water, 21-Jul-1995 17
Laboratory Average
Tag Lab
EB
U
PG
CS
CQ
QT
ID
RW
DM
CX
DB
S
R
- SM
OB
n
TG
HK
BI
EW
AJ
1C
EO
DD
AF
NA
BK
PV
D
SL
QQ
LT
RI
E
Average Tag
25.00
25.07
25.10
25.30
25.33
25.40
25.43
25.93
26.23
26.53
26.63
26.70
26.77
26.83
26.97
27.33
27.37
27.40
27.50
28.00
28.20 ft
28.83 ft
29.60 ft
30.20 ft
31.37 ft
31.57 ft
32.60 ft
35.73 x
36.60 x
37.17 x
40.27 x
94.97 x
167.17 x
1421.00 x
^
/18
Lab
HI
UW
K
I
SR
VJ
KE
CK
AW
RZ
EN
VT
BM
TN
RE
CP
UN
QX
L
RV
VH
sx
NJ
RR
TO
DI
AR
FJ
NP
FN
QW
NB
WF
MX
Frequency distribution
- _- __ I.J
-2
III • -J-
||B|||||||||||_.|B_ _ _
0 +2 +4
+6
Normalized deviation of the mean from the known value
• s No data submitted
0 s Insufficient data
TAG SYMBOLS ft s Above control
x = Determined to be an outlier •!!• s Below control
limit
limit
-------
18/18 CRD-LV Performance Evaluation: Gross Alpha-Beta in Water, 21-Jul-1995
Gross Beta
% responding labs Frequency distribution
10
Ulillii
-6 -4 -2 0 +2 +4 +6
Normalized deviation of the mean from the grand average
------- |