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Scientific Investigations Report 2008–5167

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2008–5167

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Table 5. Results of nonparametric tests of similarity of median sediment thicknesses between three composite unit groups, Idaho National Laboratory, Idaho.

[Abbreviations: K-W, Kruskal-Wallis test for similarity of multiple medians; M-W, Mann-Whitney test of similarity of two medians; p-value, probability value; vs., versus]

Groupings of composite units Test p-value Number of measurements from samples
1   2   3 1 2 3
1 vs. 2–7 vs. 8–14 K-W 0.000 16 88 13
1 vs. 2–7 M-W 0.000 16 88
2–7 vs. 8–14 M-W 0.005 88 13
1 vs. 8–14 M-W 0.693 16 13

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