Means & Standard Deviations (SDs) ---> Cohen's d or Standardized Mean Difference (SMD) & Effect Size Correlation (r)

By inputting the means and standard deviations of both groups, you can calculate both Cohen's d or standardized mean difference (SMD) and the effect size correlation (r).

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If you want to convert or calculate data for more than one study at the same time, enter data for study 1, study 2, study 3, ...etc, RESPECTIVELY across all cells using the same order.

Conversion Results

Study Group 1 Mean Group 1 SD Group 2 Mean Group 2 SD Cohen's (d) Effect Size (r)

Description of the formula

Variables Definitions

  1. Mean Group 1: The average value of the variable being measured in Group 1.
  2. SD Group 1: The standard deviation, a measure of the variability, in Group 1.
  3. Mean Group 2: The average value of the variable being measured in Group 2.
  4. SD Group 2: The standard deviation in Group 2.
  5. Cohen's (d): The calculated effect size that represents the standardized mean difference between Group 1 and Group 2.
  6. Effect Size (r): The calculated effect size correlation represents the strength and direction of the relationship between Group 1 and Group 2.

For more details about these variables and used formulas, read the full article.