Building the CHAID Tree Model
- To run a Decision Tree analysis, from the
menus choose:
- Select Credit rating as the dependent variable.
- Select all the remaining variables as independent variables. (The procedure will automatically exclude any variables that don't make a significant contribution to the final model.)
At this point, you could run the procedure and produce a basic tree model, but we're going to select some additional output and make a few minor adjustments to the criteria used to generate the model.