Annual Sources of Radiation Exposure Pie Chart
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Pie charts show data in the form of sections, or parts, of a whole. The pie chart example shows three
parts (50%, 26% and 24%) that add up to the whole (100%).
In 2009 the National Council on Radiation Protection and Measurements (NCRP) examined Americans'
annual exposure to radiation. Hypothesize the amount of natural and man-made radiation Americans
were exposed to by dividing the pie chart into two parts. Label each part according to its percentage of
the whole. Make sure the two slices total 100%. Color each part (and the corresponding box in the
legend) with a different color or pattern.
Pie Chart Example
Pie Chart Legend
Natural (Background) Radiation
Man-Made Radiation