Which of the following tests would be appropriate to measure participants' attitude before a treatment intervention and then again after the intervention?
A) Mann-Whitney test
B) Wilcoxon matched-pairs signed-ranks test
C) Kruskal-Wallis test
D) Spearman test

Question

Quizplus · Accepted Answer

The appropriate test to measure participants' attitude before and after a treatment intervention would be a Wilcoxon matched-pairs signed-ranks test. This test is used to compare the means of related samples, such as before and after scores of the same group of participants. The Mann-Whitney test, Kruskal-Wallis test, and Spearman test are not appropriate for this type of analysis.

Which of the Following Tests Would Be Appropriate to Measure