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Learning objective

Evaluate sample size, sampling strategy, uncertainty and statistical limitations.

Read the explanation, check the common trap, then practise with flashcards and questions.

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Flashcards

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Topic

Geographical skills checklist

Subtopic

Statistical skills

Aqa A Level GeographyGeographical skills checklist

Study support

Understand this objective

Quick explanation

Evaluate sample size, sampling strategy, uncertainty and statistical limitations

  • This point belongs to Geographical skills checklist, especially Statistical skills.
  • You need to be able to evaluate sample size, sampling strategy, uncertainty and statistical limitations.
  • The key ideas to know are sampling.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

sampling

Why it matters

This objective helps connect Statistical skills to exam-style questions, flashcards, and revision notes for Geographical skills checklist.

Quick student answer

Which sampling strategy is most appropriate for ensuring that every member of a population has an equal chance of being selected?

Direct answer

Random sampling ensures that every member of the population has an equal chance of being selected, reducing bias.

Key terms

  • Margin of Error: A measure of the uncertainty in a statistical estimate, indicating the range within which the true value is expected to lie.
  • Bias: A systematic error that leads to an incorrect estimate of the population parameter due to the sampling method used.

Common trap

Ignoring Sample Size: Always evaluate the sample size in relation to the population to ensure valid conclusions.

Related questions

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