How to calculate cohens d. A quick and easy method. Cohens d calculator first determine the meanscalculate the means of each data set using a standard formula averages. For the independent samples t test cohens d is determined by calculating the mean difference between your two groups and then dividing the result by the pooled standard deviation.
For further information about the cohens d formula and how it works we have written an article which covers this in detail. Below is the cohens d calculator. Simply enter the groups mean and standard deviation values into the calculator click the calculate button and cohens d values will be created for you.
Calculate the pooled standard deviationusing s1 and s2 calculate the. Next determine the standard deviationscalculate the standard deviations s1 and s2 of each data set. Thus taking these values and entering them into the equation are shown below.