A researcher conducts two studies using the one-way between-subjects ANOVA.The sum of squares between groups is larger in Study 1 than in Study 2;the sum of squares total is smaller in Study 1 than in Study 2.Using eta-squared,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

Eta-squared is calculated by dividing the sum of squares between groups by the sum of squares total. As the sum of squares between groups is larger in Study 1 than in Study 2, and the sum of squares total is smaller in Study 1 than in Study 2, the numerator of eta-squared will be larger in Study 1. Therefore, the effect size will be larger in Study 1.

A Researcher Conducts Two Studies Using the One-Way Between-Subjects ANOVA