Scientific Investigations Report 2008–5167
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2008–5167
Table 9. Results of nonparametric tests of similarity of sediment thickness medians, variances, and frequency distribution shapes, Idaho National Laboratory, Idaho.
[Selected data from Anderson and Liszewski (1997) and data gathered in this study, with various degrees of artificial censoring. 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; >, greater than]
Sedimentary interbed thicknesses of composite units 1–7 | Test | p-value | Number of measurements from samples | |||
---|---|---|---|---|---|---|
1 | 2 | 1 | 2 | |||
M-W | 0.000 | 74 | 97 | |||
Anderson and Liszewski (1997) | vs. | This data set | L | 0.861 | 74 | 97 |
K-S | 0.000 | 74 | 97 | |||
M-W | 0.014 | 74 | 73 | |||
Anderson and Liszewski (1997) | vs. | This data set (> 1 foot) | L | 0.687 | 74 | 73 |
K-S | 0.000 | 74 | 73 | |||
M-W | 0.991 | 74 | 56 | |||
Anderson and Liszewski (1997) | vs. | This data set (> 2 feet) | L | 0.617 | 74 | 56 |
K-S | 0.386 | 74 | 56 | |||
M-W | 0.050 | 74 | 46 | |||
Anderson and Liszewski (1997) | vs. | This data set (> 3 feet) | L | 0.603 | 74 | 46 |
K-S | 0.103 | 74 | 46 |