step  To run a stepwise Linear Regression on the standardized variables, recall the Linear Regression dialog box.

step  Deselect Vehicle type through Fuel efficiency as independent variables.

step  Select Zscore: Vehicle type through Zscore: Fuel efficiency as independent variables.

step  Select Stepwise as the entry method.

step  Select Model as the case labeling variable.

step  Click Statistics.

step  Deselect Part and partial correlations.

step  Select Casewise diagnostics and type 2 in the text box.

step  Click Continue.

step  Click Plots in the Linear Regression dialog box.

step  Select *SDRESID as the y variable and *ZPRED as the x variable.

step  Select Histogram.

step  Click Continue.

step  Click Save in the Linear Regression dialog box.

step  Select Standardized in the Predicted Values group.

step  Select Cook's and Leverage values in the Distances group.

step  Click Continue.

step  Click OK in the Linear Regression dialog box.