Which one of the following nonparametric methods can be considered as an extension of the Wilcoxon rank sum test to three or more populations?
A)Wilcoxon signed rank test
B)Sign test
C)Kruskall-Wallis test
D)Spearman's test
E)Adcock Addition test

Question

Quizplus · Accepted Answer

The Kruskal-Wallis test can be considered as an extension of the Wilcoxon rank sum test to three or more populations. It is used to compare the median ranks of three or more independent groups. The Wilcoxon signed rank test and sign test are both used for two independent groups, while Spearman's test is used for measuring the correlation between two variables. Adcock Addition test is not a known statistical method.

Which One of the Following Nonparametric Methods Can Be Considered