Statistical Summary
Sample Id: MAPEP-95-W3
Laboratories Receiving Samples: 73
Number Labs Sample Grand Grand Mean % Range Range
Analyte Reporting Size Mean Std Dev Bias Min Max
Arsenic 43 42 2.65 0.22 6.12 1.93 3.22
Barium 43 41 41.47 2.26 4.14 33.03 46.58
Cadmium 44 44 0.58 0.03 4.50 0.44 0.65
Chromium 44 44 2.26 0.13 3.95 1.73 2.57
Lead 44 44 2.14 0.12 5.09 1.53 2.44
Selenium 43 41 0.50 0.06 8.06 0.38 0.65
Americium-241 41 37 1.29 0.14 8.11 0.98 1.69
Cesium-137 48 48 55.70 2.99 6.14 50.07 63.89
Cobalt-57 47 44 91.49 8.49 6.55 68.40 104.93
Manganese-54 47 47 99.72 9.54 6.29 74.47 116.48
Plutonium-238 44 40 1.81 0.16 7.29 1.45 2.26
Plutonium-239 47 44 1.35 0.12 7.67 0.97 1.65
Strontium-90 39 36 15.41 1.72 8.94 11.23 18.63
Uranium-234 44 42 0.64 0.06 7.10 0.52 0.77
Uranium-238 46 43 0.64 0.05 6.79 0.56 0.83
Sample size excludes outliers.
Outliers are defined as laboratory means with a bias greater than 30 percent.
Range minimum and maximum values refer to the laboratory means.
Final Reports were mailed to Participants the week of April 22nd.
05/02/96 Page 1