Combined Science GCSE
Random selection and bias reduction
What Random selection and bias reduction means in Combined Science GCSE, as defined for AQA.
Definition of Random selection and bias reduction
Check what you remember
Read the wording for your board, then hide it and explain Random selection and bias reduction in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Number every individual, then use a random number generator to pick participants, giving every member an equal chance of selection.
Topics that use Random selection and bias reduction
- Health issues (AQA GCSE)
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Using Random selection and bias reduction in the exam
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