Regression Analysis, R Squared, Pseudo R Squared, Adjusted R Squared, Deviance.
some math. From the above plot, one can see that: Derivation of the alternate formula for R-Squared for OLSR models (Image by Author) It can be shown that when the Least Squares Estimation technique is used to fit a linear regression model, the term 2*(y_i — y_pred)*(y_pred — y_mean) is 0. So for