The Non-Parametric Tests Discussed in Your Textbook (Wilcoxon Rank Sum

Multiple Choice

The non-parametric tests discussed in your textbook (Wilcoxon rank sum test, sign test, Wilcoxon signed rank sum test, Kruskal-Wallis test and Friedman test) all require that the probability distributions be:

A) identical except with respect to location.
B) identical except with respect to spread (variance) .
C) identical except with respect to shape (distribution) .
D) different with respect to location, spread, and shape.