3.3.3.3a - Decision tree construction

Construct and interpret simple decision-tree diagrams.

Use a - decision tree construction to connect the rule to the data and decision in the question.

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

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

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