H2 Maths Correlation and Regression | Free Notes
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H2 Maths correlation and regression notes: key formulas for PMCC, least-squares lines, and worked examples for residual and prediction exam questions.
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- Quick regression map
- Core Definitions
- Computing \( r \)
- Regression Line and Prediction
Q: What does H2 Maths Notes (JC 1-2): 6.6) Correlation and Linear Regression cover?
A: Product-moment correlation, least-squares lines, residual interpretation, and prediction limits for H2 Maths.
Before you revise
Revisit scatter diagram basics and variance formulas so the transition to algebraic PMCC and regression is smooth. Keep a graphing calculator (GC) or spreadsheet handy to compute and regression coefficients quickly.
Quick regression map
| If you have... | Walk away with this | First action |
| 1 second | Correlation measures association, not cause. | Look at the scatter first. |
| 10 seconds | Regression predicts one variable from another. | Decide which variable is x and which is y. |
| 100 seconds | Reliable prediction stays near the observed data range. | Warn against extrapolation when the input is outside the data. |
Concrete example: A strong link between Physics and Maths scores can help predict one from the other, but it does not prove that one subject caused the other score.
Status: SEAB's current H2 Mathematics (9758) syllabus PDF is labelled for 2026. Topic 6.6 is assessed in Paper 2 Section B (Probability and Statistics, 60 marks) and excludes hypothesis tests.
