Combined Science GCSE
Random sampling
What Random sampling means in Combined Science GCSE, as defined for AQA.
Definition of Random sampling
Check what you remember
Read the wording for your board, then hide it and explain Random sampling in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Placing quadrats randomly, for example using random numbers as coordinates, avoids bias and makes the sample more representative of the whole habitat.
Topics that use Random sampling
- Levels of organisation (AQA GCSE)
Related terms
- Abiotic factors and species distribution
- Accuracy of plotting
- Biomass
- Community
- Food chain
- Line or curve of best fit
- Mean
- Median
Using Random sampling in the exam
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