First Quarter 2005

INL Quarterly Site Environmental Report

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APPENDIX D
STATISTICAL ANALYSIS RESULTS

TABLE D-1     Kruskal-Wallisa statistical results between INL, Boundary, and Distant LV air sample groups by quarter and by month.

Parameter

pb

Gross Alpha

Quarter

0.19

January

0.04

February

0.94

March

0.27

Gross Beta

Quarter

0.11

January

0.40

February

0.06

March

0.77

a.       See the Determining Statistical Differences of the Helpful Information section for details on the Kruskal-Wallis test.

b.     A 'p' value greater than 0.05 signifies no statistical difference between data groups.

 

TABLE D-2     Statistical difference in weekly LV air sample gross alpha and gross beta concentrations measured at Boundary and Distant locations.

 

Mann-Whitney U Testa

Parameter

Week

pb

Gross Alpha

 

 

 

January 5th

0.76

 

January 12th

0.32

 

January 19th

0.10

 

January 26th

0.83

 

February 2nd

0.89

 

February 9th

0.77

 

February 16th

0.87

 

February 23d

0.87

 

March 2nd

0.87

 

March 9th

0.17

 

March 16th

0.25

 

March 23d

0.57

 

March 30th

0.67

Gross Beta

 

 

 

January 5th

0.35

 

January 12th

0.39

 

January 19th

0.37

 

January 26th

0.89

 

February 2nd

0.35

 

February 9th

0.39

 

February 16th

0.94

 

February 23d

0.12

 

March 2nd

0.75

 

March 9th

0.20

 

March 16th

0.17

 

March 23d

0.32

 

March 30th

0.57

a.      See the Determining Statistical Differences of the Helpful Information section for details on the Mann Whitney U  test.

b.      A ‘p’ value greater than 0.05 signifies no statistical difference between data groups.  Red text indicates dates with statistically significant differences.

 

 

 

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