3.3.3.3b - Decision tree calculations

Calculate and interpret figures generated by decision trees.

Use b - decision tree calculations to connect the rule to the data and decision in the question.

This matters because b - decision tree calculations determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply b - decision tree calculations to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: b - Decision tree calculations is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.