A non-parametric test for testing the difference between two medians from independent samples is known as the ____.
A) Kruskal-Wallis test
B) Wilcoxon rank sum test
C) Friedman rank test
D) Wilcoxon signed ranks test

Question

Quizplus · Accepted Answer

The Wilcoxon rank sum test, also known as the Mann-Whitney U test, is used for testing the difference between two medians from independent samples. The Kruskal-Wallis test is used for comparing three or more groups. The Friedman rank test is used for testing differences among multiple related groups. The Wilcoxon signed ranks test is used for testing the difference between two related medians.

A Non-Parametric Test for Testing the Difference Between Two Medians