Final answer:
Partial eta squared (Partial η²) is an effect size measure commonly reported for ANOVA tests, and it is specifically associated with Repeated Measures ANOVA.
Step-by-step explanation:
Partial eta squared (Partial η²) is the effect size used in the context of analysis of variance (ANOVA). It measures the proportion of variance in the dependent variable that is associated with the membership of different groups defined by the independent variables. Although it can be used in various contexts, it is most commonly reported for ANOVA tests, including Repeated Measures ANOVA, where multiple measurements are taken on the same subjects.
The correct answer to the question “Partial eta squared (Partial η²) is the effect size for which test?” is A. Repeated Measures ANOVA. The other options listed, such as Chi-Square, Regression, and Correlation, have their own measures of effect size. For instance, the Chi-Square test uses the test statistic Χ², and the Regression uses the coefficient of determination (r²), which reflects the proportion of variance in the dependent variable that can be explained by the independent variable(s).