Regression Analysis, R Squared, Pseudo R Squared, Adjusted R Squared, Deviance.
will get a quantity that is proportional to the variance in y. It is known as the Total Sum of Square TSS. Total Sum of Squares (TSS) (Image by Author) The Total Sum of Squares is proportional to the variance in your data. It is the variance that the Mean Model wasn’t able to explain. Because TSS/N