To test the effectiveness of a business school preparation course, 8 students took a general business test before and after the course. There is evidence that the before and after exam scores are not normally distributed. Which of the following tests will be the most appropriate?
A) Pooled-variance t test
B) Paired t test
C) Wilcoxon rank sum test
D) Wilcoxon signed rank test

Question

Quizplus · Accepted Answer

Since there is evidence that the before and after exam scores are not normally distributed, we cannot use a pooled-variance t-test. Therefore, the most appropriate test would be the non-parametric Wilcoxon signed rank test, which is designed to compare scores from the same population when the underlying distribution is not normal.

To Test the Effectiveness of a Business School Preparation Course