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⇤ ← Revision 1 as of 2007-03-02 11:32:02
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| Small Medium Large | ||||||||<20% style="VERTICAL-ALIGN: top; TEXT-ALIGN: center"> Effect size ||Used in ||Small ||Medium || Large|| ||||||||<style="TEXT-ALIGN: center"> Correlation || || 0.1 || 0.3 || 0.5 || ||||||||<style="TEXT-ALIGN: center"> R-squared || regression inc anovas || 0.01 ||0.06 || 0.14 || ||||||||<style="TEXT-ALIGN: center"> Cohen's f || regression inc anovas || 0.1 || 0.25 || 0.40 || ||||||||<style="TEXT-ALIGN: center"> Cohen's d || t-tests || 0.2 || 0.5 || 0.8 || ||||||||<style="TEXT-ALIGN: center"> Cohen's w || chi-square || 0.1 || 0.3 || 0.5 || 'Definitions' |
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| Correlations 0.1 0.3 0.5 R-squared regression inc anovas 0.01 0.06 0.14 Cohen's f regression inc anovas 0.1 0.25 0.40 Cohen's d t-tests 0.2 0.5 0.8 Cohen's w chi-square 0.1 0.3 0.5 |
Rules of thumb on magnitudes of effect sizes
Effect size
Used in
Small
Medium
Large
Correlation |
|
0.1 |
0.3 |
0.5 |
|||
R-squared |
regression inc anovas |
0.01 |
0.06 |
0.14 |
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Cohen's f |
regression inc anovas |
0.1 |
0.25 |
0.40 |
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Cohen's d |
t-tests |
0.2 |
0.5 |
0.8 |
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Cohen's w |
chi-square |
0.1 |
0.3 |
0.5 |
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'Definitions'
$$\mbox{Cohen's f} = \sqrt{Rtext{2} / 1 - Rtext{2}}