Understanding and Reporting the Mann-Whitney U Test

What is the primary purpose of the Mann-Whitney U test?

• To compare two dependent samples

• To compare two independent samples

• To analyze variance within a single group

• To test for correlation between variables

Which of the following is NOT a step in reporting the Mann-Whitney U test results according to APA style?

• Summarizing the results

• Calculating the mean difference

• Reporting the U statistic

• Specifying the test and its purpose

How should a p-value of 0.045 be reported according to APA style?

• P = 0.001

• P < 0.001

• P > 0.05

• P = 0.045

What does an effect size of R = 0.34 indicate?

• A small effect size

• A medium effect size

• A large effect size

• No effect size

Why is clarity and conciseness important in APA style reporting?

• To make the report more complex

• To ensure the report is lengthy

• To help the audience easily understand the results

• To include as much data as possible