Statistical Stationarity of Sediment Interbed Thicknesses in a Basalt Aquifer, Idaho National Laboratory, Eastern Snake River Plain, Idaho

Scientific Investigations Report 2008–5167

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

Table 8. Results of nonparametric tests of similarity of sediment thickness medians, variances, and distribution shapes between two independent data sets, Idaho National Laboratory, Idaho.

[Selected data from Anderson and Liszewski (1997) interpreted from natural-gamma logs and data from this study gathered using both lithologic logs and natural-gamma logs. Abbreviations: M-W, Mann-Whitney test of similarity of medians; L, Levene’s test of similarity of variances; K-S, Kolmogorov-Smirnov test of similarity of distribution shape; p-value, probability value; vs., versus]

Sedimentary interbed thicknesses of composite units 1–7			Test	p-value	Number of measurements from samples
1		2	Test	p-value	1	2
Anderson and Liszewski (1997)	vs.	This data set	M-W	0.000	74	97
			L	0.861	74	97
			K-S	0.000	74	97

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