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GCSE Chemistry · key term
The number of independent observations, objects, specimens or experimental units included in an investigation.
Used by OCR
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
Revise: Sample size and rangeSample size is the number of independent observations, objects or specimens included. The range of values runs from the lowest to the highest value investigated or measured.
Justify a sample size by linking it to variation, anomalies and confidence in the pattern, while recognising limits such as time, cost, safety or available material.
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