AQA GCSE Geography · 8035
Paper 3
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GCSE Geography · key term
Selecting samples at regular intervals, such as measuring river depth every 50 cm across a channel.
Used by AQA and OCR
Paper 3
Specification 9.3 · Paper 1, Paper 2, Paper 3
Selecting observations at regular intervals, such as every 20 metres along a transect.
Revise: Fieldwork Design and Data Collection ReliabilitySystematic sampling uses regular intervals. Taking river-depth readings every 50 cm across a channel gives an organised spread of observations and is straightforward to repeat. However, regular intervals can miss features between the sample points.
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