Eta Squared (η²) Calculator
Calculate effect size for ANOVA (proportion of variance explained)
About Eta Squared
Eta Squared (η²): SS_effect / SS_total - proportion of variance explained.
Omega Squared (ω²): Less biased estimate, preferred for population inferences.
Interpretation (Cohen, 1988):
- η² < 0.01: Negligible
- 0.01 ≤ η² < 0.06: Small
- 0.06 ≤ η² < 0.14: Medium
- η² ≥ 0.14: Large