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EnglandGeographyQuick questions
Component 4: Independent Investigation (NEA)
Quick questions on Data collection and sampling - Eduqas A-Level Geography
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are sampling strategies?Show answer
You cannot study everything, so you sample. Random sampling minimises bias but may cluster and miss parts of the area. Systematic sampling (a fixed interval along a transect or grid) gives even, predictable coverage and is ideal where you are testing change along a gradient (distance along a beach, a transect from city centre to suburb). Stratified sampling ensures representation of recognised subgroups, for example sampling different land-use zones or age groups in proportion to their share of the population.
What is q1?Show answer
Define stratified sampling. [2 marks]
What is q2?Show answer
Explain why a justified sampling strategy improves an investigation's reliability. [3 marks]
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