Which test is the nonparametric counterpart of the randomized block model of the analysis of variance?
A) the Kruskal-Wallis test
B) the Friedman test
C) the Wilcoxon rank sum test
D) the Wilcoxon signed-rank sum test

Question

Quizplus · Accepted Answer

The Friedman test is the nonparametric counterpart of the randomized block model of the analysis of variance. It is used to analyze the differences among three or more groups when the data are in the form of ranked or ordinal variables. Choice A (the Kruskal-Wallis test) is used to compare three or more independent groups when the data are in the form of ranked or ordinal variables but is not specifically designed for the randomized block design. Choices C and D (the Wilcoxon rank sum test and the Wilcoxon signed-rank sum test) are used to compare two groups and are not appropriate for analyzing three or more groups in a randomized block design.

Which Test Is the Nonparametric Counterpart of the Randomized Block