A non-parametric test for testing the median difference for paired samples is known as the ____.
A) Kruskal-Wallis test
B) Wilcoxon rank sum test
C) Friedman rank test
D) Wilcoxon signed ranks test

Question

A non-parametric test for testing the median difference for paired samples is known as the  ____.
A) Kruskal-Wallis test
B) Wilcoxon rank sum test
C) Friedman rank test
D) Wilcoxon signed ranks test

Quizplus · Accepted Answer

The Wilcoxon signed ranks test is specifically designed to test for differences in medians of paired samples. The Kruskal-Wallis test and Friedman rank test are non-parametric tests, but they are used for testing differences among three or more groups. The Wilcoxon rank sum test is used to test for differences between two independent samples.

A Non-Parametric Test for Testing the Median Difference for Paired