The Nonparametric Tests Discussed in Your Text (Wilcoxon Rank Sum

Multiple Choice

The nonparametric tests discussed in your text (Wilcoxon rank sum test, sign test, Wilcoxon signed-rank test, Kruskal-Wallis test, and Friedman test) all require that the probability distributions have which of the following properties?

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