Business Statistics

554 Business Statistics

FIGURE 15.70

Linear regression: Options

dialog box

15.15.4 Using Minitab for Stepwise Regression

In order to use Minitab to run stepwise regression, click Stat/Regression/Stepwise. The Stepwise Re-

gression dialog box will appear on the screen (Figure 15.66). Place Sales in the Response box and all

four explanatory variables in the Predictors box (Figure 15.66). Click Methods, the Stepwise-Meth-

ods dialog box will appear on the screen (Figure 15.67). From Stepwise-Methods dialog box, select

Stepwise (forward and backward). Place 0.05 against Alpha to enter box and place 0.051 against

Alpha to remove box. Click OK (Figure ...