A-LevelPsychologyResearch methods9990/21 · May/June 2021 · Q52 Marks
Explain one weakness of random sampling.
- (a)Explain one weakness of random sampling.[2]
Mark scheme
Marking points from the official mark scheme (May/June 2021). The mark or mark type is shown in brackets.
- [2] 1 mark for weakness
- 1 mark for detail
- It is limited by the population chosen;
- a random sample of students of one school may not be representative of all schools;
- It is limited by access to the population;
- randomly selected people can be asked to participate, but some may not (and if similar, this causes bias);
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