The difference among means of groups is ordinarily tested by
A)multiple correlations and multiple regressions.
B)multiple regressions and bivariate predictions.
C)analysis of variance and t tests.
D)t tests and bivariate correlations.

Question

Quizplus · Accepted Answer

Analysis of variance (ANOVA) and t tests are commonly used to test for differences among means of groups. ANOVA is appropriate when comparing more than two groups, while t tests are used when comparing two groups. Options A and B are not commonly used for testing differences among means, although they may be used in some circumstances. Option D is somewhat related, but t tests are more appropriate for testing differences among means when only comparing two groups.

The Difference Among Means of Groups Is Ordinarily Tested by