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Cohen's d Calculator

Calculate Cohen's d to measure the effect size between two means.

Cohen's d Calculator
Enter numbers for Sample 1 separated by commas, spaces, or line breaks [example]:
Enter numbers for Sample 2 separated by commas, spaces, or line breaks [example]:
Precision:

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About Cohen's d Calculator

The Cohen's d Calculator computes Cohen's d, a measure of effect size that indicates the standardized difference between two means.

What is Cohen's d?

Cohen's d is a widely used statistic in social sciences to quantify the difference between two group means in terms of their standard deviation. It is particularly useful for understanding the practical significance of research findings.

Cohen's d is calculated using the following formula:

\( d = \frac{\bar{X}_1 - \bar{X}_2}{s_p} \)

Where:
\( \bar{X}_1, \bar{X}_2 \) = Means of Sample 1 and Sample 2
\( s_p \) = Pooled Standard Deviation

Calculating the Pooled Standard Deviation

The pooled standard deviation is calculated as:

\( s_p = \sqrt{ \frac{(n_1 -1)s_1^2 + (n_2 -1)s_2^2}{n_1 + n_2 -2} } \)

Where:
\( s_1, s_2 \) = Standard deviations of Sample 1 and Sample 2
\( n_1, n_2 \) = Sample sizes of Sample 1 and Sample 2

Interpreting the Results

Below are explanations of each item in the results:

Interpreting Cohen's d:

Use Cases of Cohen's d

Cohen's d is used in various fields:

References:

Cohen's d - Wikipedia

Reference this content, page, or tool as:

"Cohen's d Calculator" at https://miniwebtool.com/cohens-d-calculator/ from miniwebtool, https://miniwebtool.com/

by miniwebtool team. Updated: Nov 08, 2024

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