1.
Select Help > Sample Data Library and Diabetes.jmp.
2.
Select Analyze > Predictive Modeling > Partition.
3.
Select Y and click Y, Response.
4.
Select Age through Glucose and click X, Factor.
For JMP Pro, select Validation and click Validation.
For JMP, enter 0.3 as the Validation Proportion.
Completed Launch Window with Validation Portion = 0.3
6.
7.
On the platform report window, click Split once to perform a split.
Report after First Split with Decision Tree Hidden
8.
Click Go to use automatic splitting.
Report after Automatic Splitting with Validation

Help created on 9/19/2017