The following formula is used to calculate Cohen’s D using the means and standard deviations of two sets of data.

## Cohen’s D Definition

Cohen’s D is a term used in statistics to describe the relationship between to different means. It’s used to no only compare but to standardize the difference. Cohen’s D is also referred to as an effect size.

For example, Cohen’s D is used for analyzing and reporting the results of both t-tests and ANOVA tests.

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