Variables

Variables.

• Candidates should be able to:.
• describe what is meant by an independent variable and a dependent variable.
• describe how dependent variables can be measured.
• identify independent variables and dependent variables in studies.

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

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

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