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Edexcel A-Level Biology AS 1.16 Study Design for Health Risk Factors Questions

Identify the population and measured outcome, check control of confounders and bias, then use replication, consistency and applicability to judge the conclusion.

Syllabus
First assessment 2019
Course
Biology YBI11
Level
AS

Exam points

  • Design a questionnaire or trial with justified variables, controls and sampling choices.
  • Evaluate validity through confounding factors, selection bias and measurement quality.
  • Evaluate reliability through sample size, replication and consistency of results.

Edexcel A-Level Biology AS 1.16 Study Design for Health Risk Factors Questions question 1

[Maximum number: 3]

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

Dietary antioxidants may reduce the risk of CVD.

Devise a study to confirm that antioxidants reduce the risk of CVD.

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