Calculating R 2 By Hand

Introduction & Importance

Calculating R-squared by hand is a crucial skill in statistics. It helps you understand the strength of the relationship between two variables…

How to Use This Calculator

1. Enter the Sum of Squares Residual (SSR) and Sum of Squares Total (SST) values.
2. Click ‘Calculate’.
3. View the result and chart below.

Formula & Methodology

R-squared (R²) is calculated as:

R² = 1 – (SSR / SST)

Real-World Examples

Data & Statistics

Comparison of R-squared values

Method	R-squared
Linear Regression	0.85
Polynomial Regression	0.92

Expert Tips

• R-squared values range from 0 to 1.
• A higher R-squared indicates a better fit.
• R-squared can be negative, indicating a poor fit.

Interactive FAQ

What does R-squared represent?

R-squared represents the proportion of the variance in the dependent variable that is predictable from the independent variable(s).

Learn more about R-squared

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