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Research methods and techniques

Research methods and techniques

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Question 197

A marine biologist wants to estimate the mean microplastic concentration in a large lake. The lake has three distinct depth zones (shallow, mid-water, and deep).

Explain one advantage and one disadvantage of using a stratified sampling method, based on these depth zones, compared to using a simple random sampling method for this study.

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Markscheme

Research methods and techniques Questions

  1. A Level
  2. /Psychology
  3. /Research methods and techniques

644 exam-style questions on OCR A Level Psychology Research methods and techniques. Each one has a worked solution and a mark scheme showing where the marks go.

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