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Edexcel A-Level Biology AS 1.15 Health Risk Data Correlation and Causation Questions

Describe the direction and spread with figures, identify confounding variables or group differences and reserve causal language for controlled supporting evidence.

Syllabus
First assessment 2019
Course
Biology YBI11
Level
AS

Exam points

  • Describe a correlation with direction, data values, spread and relevant group differences.
  • Distinguish association from causation by identifying confounding variables and controls.
  • Calculate proportions or compare mortality and screening data with correct units.

Edexcel A-Level Biology AS 1.15 Health Risk Data Correlation and Causation Questions question 1

[Maximum number: 2]

Several factors increase the risk of cardiovascular disease (CVD).

The graph shows the effect of exercise on the relative risk of death from CVD.

Relative risk of death from CVD

Figure for Question Edexcel A-Level Biology AS 1.15 Health Risk Data Correlation and Causation Questions question 1 — Edexcel A-Level Biology AS

Energy needed for exercise / kJ per week
Describe the conclusions that can be made from the information shown in this graph.

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