Based on the effect size conventions,d = 0.99 is a
A)small effect size
B)medium effect size
C)large effect size

Question

Quizplus · Accepted Answer

According to Cohen's guidelines, an effect size of d = 0.99 is considered to be a large effect size. Cohen's d is a standardized measure of effect size that compares the means of two groups and takes into account the variability within each group. A d of 0.2 is considered a small effect size, a d of 0.5 is considered a medium effect size, and a d of 0.8 or higher is considered a large effect size. Therefore, a d of 0.99 is a large effect size.

Based on the Effect Size Conventions,d = 0