Which one of the following nonparametric methods can be considered as an extension of the Wilcoxon rank sum test?
A)Wilcoxon signed rank test
B)Sign test
C)Kruskal-Wallis test
D)Spearman's test

Question

Quizplus · Accepted Answer

The Kruskal-Wallis test is an extension of the Wilcoxon rank sum test which allows for comparison of more than two independent groups. The Wilcoxon signed rank test and the sign test are both used for comparing two related samples, while Spearman's test is a measure of correlation between two continuous variables.

Which One of the Following Nonparametric Methods Can Be Considered