Regression Analysis, R Squared, Pseudo R Squared, Adjusted R Squared, Deviance.
Let’s zoom into a portion of the above graph: The prediction error of the Mean Model (Image by Author) In the above plot, (y_i — y_mean) is the error made by the Mean Model in predicting y_i. If you calculate this error for each value of y and then calculate the sum of the square of each error, you