Most "before and after" types of experiments should be analyzed using ___.
A)chi-square goodness-of-fit test
B)Kruskal-Wallis test
C)Mann-Whitney U test
D)Wilcoxon test
E)Friedman test

Question

Quizplus · Accepted Answer

The Wilcoxon signed-rank test is appropriate for analyzing "before and after" types of experiments because it compares the differences between paired observations to test if there is a significant change. It is a non-parametric test and does not require the assumption of normality.

Most "Before and After" Types of Experiments Should Be Analyzed