Modeling and Multivariate Methods - SAS

342 Recursively Partitioning Data Chapter 13
Example
Note: Results will vary because the Validation Portion option chooses rows at random to use as the training
and validation sets.
Decision Tree
Follow the steps below to grow a tree using the Decision Tree method:
1. Select Analyze > Modeling > Partition.
2. Assign mvalue to the Y, Response role.
3. Assign the other variables (crim through lstat) to the X, Factor role.
4. Select the Decision Tree option from the Method menu. If using JMP, the Decision Tree option is
the method that gets used.
5. Enter 0.2 for the Validation Portion.
6. Click OK.
7. On the platform report window, click Go to perform automatic splitting.
8. Select Plot Actual by Predicted from the platform red-triangle menu.
A portion of the report is shown in Figure 13.17.