Pearson Progression Step Q Scheme Marks AOs and Progress descriptor 2a A complete collection of relevant individual people or B1 1.2 2nd Understand the vocabulary of sampling. (1) 2b Opportunity (convenience). B1 1.2 3rd Understand quota and opportunity sampling. (1) 2c Systematic. B1 1.2 3rd Understand and carry out systematic sampling. (1) Two from: B1 2.4 5th 2d not random B1 2.4 Select and critique a electoral register may have errors sampling there may not be enough (500) households on the technique in a register. given context. (2) Either: random sampling it avoids bias. – 2e B1 2.4 5th Or: quota sampling no sampling frame required, continue until – Select and all quotas filled. critique a sampling Either: Random sampling from people buying kitchen cleaners B1 2.4 technique in a in a large store, as this would reduce potential bias. given context. Or: Quota sampling from people based on a chosen set of ages and genders who use kitchen cleaners, continuing until all quotas are filled, as this would avoid the need for a sampling frame and allow for a more clearly representative sample. (2) (7 marks)
Q Scheme Marks AOs Pearson Progression Step and Progress descriptor 2a A complete collection of relevant individual people or B1 1.2 2nd Understand the vocabulary of sampling. (1) 2b Opportunity (convenience). B1 1.2 3rd Understand quota and opportunity sampling. (1) 2c Systematic. B1 1.2 3rd Understand and carry out systematic sampling. (1) 2d Two from: not random electoral register may have errors there may not be enough (500) households on the register. B1 B1 2.4 2.4 5th Select and critique a sampling technique in a given context. (2) 2e Either: random sampling – it avoids bias. Or: quota sampling – no sampling frame required, continue until all quotas filled. B1 2.4 5th Select and critique a sampling technique in a given context. Either: Random sampling from people buying kitchen cleaners in a large store, as this would reduce potential bias. Or: Quota sampling from people based on a chosen set of ages and genders who use kitchen cleaners, continuing until all quotas are filled, as this would avoid the need for a sampling frame and allow for a more clearly representative sample. B1 2.4 (2) (7 marks)
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