Each of the following hypothesis tests has a normal approximation formula,except for the ______.
A) Mann-Whitney U test
B) related-samples sign test
C) Wilcoxon signed-ranks T test
D) Friedman test

Question

Quizplus · Accepted Answer

The Friedman test is a non-parametric test for analyzing differences in treatments across multiple test attempts. Unlike the Mann-Whitney U test, related-samples sign test, and Wilcoxon signed-ranks T test, which can use normal approximation under certain conditions, the Friedman test does not rely on a normal approximation formula. It is used for comparing more than two related samples or repeated measurements on a single sample to assess differences in treatments across multiple test attempts.

Each of the Following Hypothesis Tests Has a Normal Approximation