R² coefficient of determination.
R² = 1 - SS_res / SS_tot
Range: (-∞, 1]. 1 = perfect fit, 0 = mean-predictor baseline, negative = worse than the mean baseline.
R² coefficient of determination.
R² = 1 - SS_res / SS_tot
Range: (-∞, 1]. 1 = perfect fit, 0 = mean-predictor baseline, negative = worse than the mean baseline.