11.1 ANOVA table concept
Regression sum of squares: SSR (Sum of Squares for regression) = ESS (explained sum of squares)
Residual sum of squares: SSE (Sum of Squares for Error) = RSS (residual sum of squares)
Total sum of squares: SST (Sum of Squares for total) = TSS (total sum of squares)
SSE+SSR=SST RSS+ESS=TSS