Convert between ANOVA effect sizes
Convert between ANOVA effect sizes
eta2_to_f2(es) eta2_to_f(es) f2_to_eta2(f2) f_to_eta2(f)
es |
Any measure of variance explained such as Eta-, Epsilon-, Omega-, or R-Squared, partial or otherwise. See details. |
f, f2 |
Cohen's f or f-squared. |
Any measure of variance explained can be converted to a corresponding Cohen's
f via:
f^2 = \frac{η^2}{1 - η^2}
η^2 = \frac{f^2}{1 + f^2}
If a partial Eta-Squared is used, the resulting Cohen's f is a
partial-Cohen's f; If a less biased estimate of variance explained is used
(such as Epsilon- or Omega-Squared), the resulting Cohen's f is likewise a
less biased estimate of Cohen's f.
Cohen, J. (1988). Statistical power analysis for the behavioral sciences (2nd Ed.). New York: Routledge.
Steiger, J. H. (2004). Beyond the F test: Effect size confidence intervals and tests of close fit in the analysis of variance and contrast analysis. Psychological Methods, 9, 164-182.
eta_squared() for more details.
Other convert between effect sizes:
d_to_common_language(),
d_to_r(),
odds_to_probs(),
oddsratio_to_riskratio()
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