【文章內(nèi)容簡介】 Vars In RSquare RSquare C(p) F Value Pr F 1 X4 3 The SAS System 14:40 Friday, April 30, 2022 14 The REG Procedure Model: MODEL1 Dependent Variable: Y Analysis of Variance Sum of Mean Source DF Squares Square F Value Pr F Model 3 .0001 Error 11 Corrected Total 14 Root MSE RSquare Dependent Mean Adj RSq Coeff Var Parameter Estimates Parameter Standard Standardized Variable DF Estimate Error t Value Pr |t| Estimate Intercept 1 0 X1 1 .0001 X2 1 X3 1 逐步法回歸程序模式 ? DATA A。 ? input X1X4 Y @@。 ? cards。 ? 10 23 113 9 20 106 10 22 111 ? 13 21 109 10 22 110 10 23 103 ? 8 23 100 10 24 114 10 20 104 ? 10 21 110 10 23 104 8 21 109 ? 6 23 114 8 21 113 9 22 105 ? 。 ? PROC REG CORR。 ? MODEL Y=X1X4/SELECTION=BACKWORD SLS= STB。 ? MODEL Y=X1X4/SELECTION=FORWARD SLE= STB。 MODEL Y=X1X4/SELECTION=STEPWISE SLS= SLE= STB。 ? RUN。 逐步 (前進(jìn) ,后退 )法回歸程序模式 ? The REG Procedure ? Model: MODEL1 ? Dependent Variable: Y ? Stepwise Selection: Step 1 ? Variable X1 Entered: RSquare = and C(p) = ? Analysis of Variance ? Sum of Mean ? Source DF Squares Square F Value Pr F ? Model 1 .0001 ? Error 13 ? Corrected Total 14 ? Parameter Standard ? Variable Estimate Error Type II SS F Value Pr F ? Intercept ? X1 .0001 ? Bounds on condition number: 1, 1 ? 逐步法回歸程序模式結(jié)果 ? Stepwise Selection: Step 2 ? Variable X3 Entered: RSquare = and C(p) = ? Analysis of Variance ? Sum of Mean ? Source DF Squares Square F Value Pr F ? Model 2 .0001 ? Error 12 ? Corrected Total 14 ? Parameter Standard ? Variable Estimate Error Type II SS F Value Pr F ? Intercept ? X1 .0001 ? X3 逐步法回歸程序模式結(jié)果 ? Stepwise Selection: Step 3 ? Variable X2 Entered: RSquare = and C(p) = ? Analysis of Variance ? Sum of Mean ? Source DF Squares Square F Value Pr F ? Model 3 .0001 ? Error 11 ? Corrected Total 14 ? Parameter Standard ? Variable Estimate Error Type II SS F Value Pr F ? Intercept ? X1 .0001 ? X2 ? X3 ? Bounds on condition number: , 逐步法回歸程序模式結(jié)果 ? Model: MODEL1 ? Dependent Variable: Y ? Analysis of Variance ? Sum of Mean ? Source DF Squares Square F Value Pr F ? Model 3 .0001 ? Error 11 ? Corrected Total 14 ? Root MSE RSquare ? Dependent Mean Adj RSq ? Coeff Var ? Parameter Estimates ? Parameter Standard Standardized ? Variable DF Estimate Error t Value Pr |t| Estimate ? Intercept 1 0 ? X1 1 .0001