272 13 Partition Platform The Partition Report
Decision Tree Report for Categorical Responses
As an example for a categorical response, use Titanic Passengers.jmp. Assign Survived to Y, C ol um n s.
Assign
Sex, Port, and Lifeboat to X, Factor. From the Partition report’s red triangle menu, select
Display Options > Show Split Prob. Click Split twice.
The following features are specific to the Decision Tree report for categorical responses.
In the graph, note the following:
• The Y axis scaling is in terms of probabilities. For each node, the vertical height of the
corresponding bar is its predicted probability. The predicted probabilities sum to one across the
response levels.
– In the horizontal direction, points are distributed randomly.
– In ...