The following formula is involved in the calculation of R2 values from Cohen's f2 effect size values:
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Squared multiple correlation for Cohen's f2 effect size:
where f2 is Cohen's effect size measure for an F-test.
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The following references can be used to cite this r-square calculator (from an f-square effect size):
| Soper, D.S. (2013). R-square Calculator (from an f-square Effect Size) [Software]. Available from http://www.danielsoper.com/statcalc |
| Cohen, J. (1988). Statistical Power Analysis for the Behavioral Sciences (2nd Edition). Hillsdale, NJ: Lawrence Earlbaum Associates. |