R-Squared Calculator
Calculate R² (coefficient of determination) to measure how well predictions fit observed data
About R-Squared
R² (coefficient of determination) measures the proportion of variance in the dependent variable that is predictable from the independent variable(s).
Formula: R² = 1 - (SS_res / SS_tot)
Range: 0 to 1 (0% to 100%)
Interpretation:
- R² = 1: Perfect fit
- R² = 0: Model explains no variance
- Higher values indicate better model fit
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.