Cohen's d cannot be used as a measure of effect size for ANOVA because:
A) there is no effect size measure for ANOVA.
B) its values no longer have meaning when more than two groups are compared.
C) it can only compare two means.
D) it must be saved to compute effect size for the post hoc tests.

Question

Quizplus · Accepted Answer

Cohen's d is specifically designed to measure the effect size between two means, making it unsuitable for ANOVA, which involves comparing more than two groups.

Cohen's D Cannot Be Used as a Measure of Effect