Which statistical significance test should be used in a study of whether the mean number of days worked by case-managed clients is greater than the mean worked by non-case-managed clients?
A) t-test.
B) chi-square.
C) Pearson's product-moment r.
D) Fisher's exact test.

Question

Quizplus · Accepted Answer

A t-test is appropriate for comparing the means of two independent groups, which is what is being asked in this study. Chi-square is used for categorical data, Pearson's product-moment r is used for correlation analysis, and Fisher's exact test is used for small sample sizes in contingency tables.

Which Statistical Significance Test Should Be Used in a Study