The most common measure of effect size for the correlation coefficient is called ______.
A) the correlation coefficient
B) the coefficient of determination
C) estimated Cohen's d
D) the test statistic

Question

Quizplus · Accepted Answer

The most common measure of effect size for the correlation coefficient is the coefficient of determination, which is also known as R-squared. It measures the proportion of the variance in one variable that is accounted for by the variance in the other variable. The correlation coefficient (A) is a measure of the strength and direction of the relationship between two variables, but it is not a measure of effect size. Estimated Cohen's d (C) is a measure of effect size for the difference between two means, not for correlation. The test statistic (D) is a value obtained from a statistical test, but it does not measure effect size.

The Most Common Measure of Effect Size for the Correlation