Which one of the following nonparametric methods can be considered as an extension of the Wilcoxon rank sum test?
A)Wilcoxon signed ranks 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, also known as the Mann-Whitney U test, which is used to compare two independent samples. The Kruskal-Wallis test is used to compare three or more independent samples. The Wilcoxon signed ranks test is used for paired data, the sign test is used for comparing medians, and Spearman's test is used for correlation analysis.

Which One of the Following Nonparametric Methods Can Be Considered