1.3.2.5b - Normal and inferior goods

Distinguish normal goods from inferior goods.

Use b - normal and inferior goods to connect the rule to the data and decision in the question.

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

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

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