Effect Size for Multiple Regression Formula

In statistics, Coefficient of determination (R2) gives the proportion of variation in the dependent variable based on the given independent variable. Calculate the Effect Size For Multiple Regression using the formula mentioned below. You can find the effect size of a regression by knowing the value of Squared Multiple Correlation. As per the Effect size for multiple regression formula to find the effect size, divide the squared multiple correlation by the same value subtracted by 1.


F² = R² / (1 - R²)


F² = Effect Size
R² = Squared Multiple Correlation

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Effect size (F2) is the effect used in the context of F test. Here F test is a statistical test in which it has F-distribution under the null hypothesis. Try this Effect size for multiple regression formula to do the calculation on your own.

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