A new pain medication is being tested. One group receives a placebo and another group receives the medication. After two weeks, both groups rate their level of pain. Which of the following should be used to analyze the data?
A) Mann-Whitney test
B) Wilcoxon matched-pairs signed-ranks test
C) Kruskal-Wallis test
D) Spearman test

Question

Quizplus · Accepted Answer

The Mann-Whitney test is appropriate for comparing the differences between two independent groups on a continuous or ordinal outcome, which aligns with the scenario of comparing pain levels between a placebo group and a medication group.

A New Pain Medication Is Being Tested