Many "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 test is a non-parametric test used to analyze paired samples or repeated measures data, which is typically the case in "before and after" experiments. It measures the difference between two related samples and tests whether this difference is statistically significant. It is appropriate for small sample sizes and does not require a normal distribution of the data. Therefore, the Wilcoxon test is the best choice for analyzing "before and after" experiments.

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