To run the discriminant analysis, from the menus choose:

Analyze
Classify
Discriminant...

Click Reset to restore the default settings.

Select Customer category as the grouping variable.

Select Age in Years through Number of people in household as independent variables.

Select Use stepwise method.

Select Customer category and click Define Range.

Type 1 as the minimum.

Type 4 as the maximum.

Click Continue.

Click Statistics in the Discriminant Analysis dialog box.

Select Summary table and Territorial map.

Click Continue.

Click OK in the Discriminant Analysis dialog box.

These selections produce a discriminant model using the stepwise method of variable selection.