When comparing the scores on a satisfaction scale for a group of workers before and after new salaries were provided, it is best to test the difference in mean satisfaction scores using
A) an independent samples t-test
B) analysis of variance
C) paired samples t-test
D) one-sample t-test

Question

Quizplus · Accepted Answer

Since the satisfaction scores are being compared for the same group of workers before and after a change (new salaries), the appropriate statistical test is a paired samples t-test. This test is used to compare the means of two related samples.

When Comparing the Scores on a Satisfaction Scale for a Group