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GCSE Biology · key term
The number of independent individuals, organisms, objects or samples included in an investigation.
Used by OCR
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
Revise: Sample SizeThe sample size is the number of independent individuals, organisms, objects or samples studied. The range of values runs from the lowest to the highest value of the variable being changed or measured. An appropriate investigation may require a suitable sample size, a suitable range, or both.
Do not confuse sample size with repeats. Three measurements from one person are still data from a sample of one person.
If asked to suggest a sample size, give a number or a clearly described size and justify it; writing only “a large sample” may be too vague.
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