6.4.5 - Incorrect units

Identify and correct units that are incorrect.

Use - incorrect units to connect the rule to the data and decision in the question.

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

Example: apply - incorrect units to one small, clearly defined case, show the key step or comparison, and explain the result in words.

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