Cohen's d is an estimate of ______.
A) the difference between the mean and the population in standard deviation units
B) the magnitude of the difference between the means of two groups measured in standard deviation units
C) the magnitude of the difference between the means of two groups measured in standard error units
D) the magnitude of the difference between the means of two groups measured in z-score units

Question

Quizplus · Accepted Answer

Cohen's d is a measure of effect size that quantifies the magnitude of the difference between the means of two groups in standard deviation units. The larger the Cohen's d, the larger the effect size and the more meaningful the difference between the two groups. Choices A, C, and D are incorrect because they do not accurately describe what Cohen's d represents.

Cohen's D Is an Estimate of ______