A researcher conducts two studies using the one-way within-subjects ANOVA.The sum of squares total is smaller in Study 1 than in Study 2; the sum of squares between persons and the sum of squares between groups are the same in both studies.Using partial $\eta$²,in which study will the effect size be larger? A) Study 1 B) Study 2 C) there is not enough information to answer this question

Question

Quizplus · Accepted Answer

The effect size in a one-way within-subjects ANOVA is influenced by the ratio of the sum of squares between groups to the sum of squares total. Given that the sum of squares between groups is the same in both studies but the sum of squares total is smaller in Study 1, the ratio (and thus the effect size) will be larger in Study 1.

A Researcher Conducts Two Studies Using the One-Way Within-Subjects ANOVA η\etaη

A Researcher Conducts Two Studies Using the One-Way Within-Subjects ANOVA $\eta$