# Effect Size Calculator for Multiple Regression

Effect size is a statistical concept that performs the quantitative measure of the strength of a relationship between two variable. It is also used to measure the regression coefficient in a multiple regression. Use our online Effect size calculator for multiple regression for calculating effect size for multiple regression based on the value of observed squared multiple correlations (R^{2}). Multiple regression effect size calculator is designed in a user-friendly manner.

## Multiple Regression Effect Size Calculator

Effect size is a statistical concept that performs the quantitative measure of the strength of a relationship between two variable. It is also used to measure the regression coefficient in a multiple regression. Use our online Effect size calculator for multiple regression for calculating effect size for multiple regression based on the value of observed squared multiple correlations (R^{2}). Multiple regression effect size calculator is designed in a user-friendly manner.

Code to add this calci to your website

#### Formula:

F² = R² / (1 - R²)
**Where,**
F² = Effect Size
R² = Squared Multiple Correlation

### Example:

Calculate the effect size for multiple regression with the observed squared multiple correlation(R²) of 0.8.

#### Solution:

F² = 0.8 / (1 - 0.8)

= 4