Two measures of effect size for an independent groups design with more than two means are
A)eta-squared and Cohen's f.
B)Cohen's d and the F-test.
C)the t-test and the F-test.
D)F squared and rho.

Question

Quizplus · Accepted Answer

Eta-squared and Cohen's f are both appropriate measures of effect size for an independent groups design with more than two means. Eta-squared measures the proportion of variance in the dependent variable that is explained by group membership, while Cohen's f is a standardized measure of the difference between group means. Both provide useful information about the practical significance of the results. The other options listed are either incorrect (e.g. the t-test is a test of difference, not effect size) or incomplete (e.g. the F-test is a statistical test, not a measure of effect size).

Two Measures of Effect Size for an Independent Groups Design