Pooled standard deviation is part of the formula for the Cohen's d effect size.Pooled standard deviation is similar to an average of the standard deviations from both groups.

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Pooled standard deviation is a calculation that combines the standard deviations of two groups into a single measure. It is similar to an average of the standard deviations from both groups, but it takes into account the sample size of each group. The pooled standard deviation is a key component of the Cohen's d effect size formula, which is used to compare the means of two groups.

Pooled Standard Deviation Is Part of the Formula for the Cohen's