Cohen's d is seen as advantageous over calculating the difference in means of two groups as a measure of effect size because:
A) Cohen's d can be interpreted with respect to the standard deviation.
B) Cohen's d is more likely to obtain an effect that is statistically significant.
C) Cohen's d is a more reliable calculation of effect size.
D) Cohen's d is more easily calculated.

Question

Quizplus · Accepted Answer

Cohen's d takes into account the variability within groups by dividing the difference between means by the standard deviation, allowing for a more meaningful interpretation of effect size. Option B is incorrect because Cohen's d does not influence the likelihood of obtaining statistically significant results. Option C is incorrect because reliability refers to the consistency of results over time, and Cohen's d does not necessarily improve this aspect. Option D is incorrect because calculating Cohen's d requires additional steps compared to simply taking the difference between means.

Cohen's D Is Seen as Advantageous Over Calculating the Difference