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Size: 833
Comment:
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Size: 727
Comment:
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| ||||||||<20% style="VERTICAL-ALIGN: top; TEXT-ALIGN: center"> Effect size ||Used in ||Small ||Medium || Large|| | |
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| $$\mbox{Cohen's f} = \sqrt{R^text{2} / 1 - R^text{2}} | $$\mbox{Cohen's f} = \sqrt{R^text{2} / \mbox{1 - R}^text{2}} |
Rules of thumb on magnitudes of effect sizes
Effect Size |
Use |
Small |
Medium |
Large |
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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} / \mbox{1 - R}text{2}}