An independent-measures research study with n = 5 participants in each treatment produces sample variances of 8 and 10,and a 2-point difference between the two treatment means.What is the value of Cohen's d?

Question

Quizplus · Accepted Answer

Cohen's d is calculated as the difference between two means divided by the standard deviation for the data. In this case, the pooled standard deviation (sqrt[(8+10)/2]) is 3, and the difference between means is 2. Thus, Cohen's d = 2/3.

An Independent-Measures Research Study with N = 5 Participants in Each