Sample size and reliability
What Sample size and reliability means in Combined Science GCSE, as defined for AQA.
Definitions of Sample size and reliability
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Reference: AQA
A sample must be large enough, because larger samples generally give more reliable estimates of risk.
Larger samples reduce the effect of chance variation, giving more reliable estimates.
Topics that use Sample size and reliability
- Health issues (AQA GCSE)
- The effect of lifestyle on some non-communicable diseases (AQA GCSE)
Related terms
- Non-communicable disease
- Representative sampling
- alveoli
- Asthma
- Bias in data collection
- Blood glucose regulation
- Carcinogen
- Communicable disease
Using Sample size and reliability in the exam
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