Regression of Y w.r.t. X2 ANALYSIS OF VARIANCE Sum of Squares Regression ? Residual 22 156 025 Total ?P Coefficients Standard- error Constant 1 811.2 Variable X2 9.32 63.62 Regression of Y w.r.t. X1, X2 ANALYSE OF VARIANCE Regression Residual Total Sum of Squares ? 681 981.4 ? Coefficients Standard- error Constant 742 Variable X 1 327.27 10.15 Variable X 2 -8.98 11.35