Pearson Progression Step Q Scheme Marks AOs and Progress descriptor 5a Quota. B1 1.2 3rd Understand quota and opportunity sampling. (1) 5b Advantages two from: B1 2.4 5th – easy to get sample size B1 2.4 Select and critique a inexpensive sampling fast technique in a given context. can be stratified if required. Disadvantages one from: B1 2.4 – not random could be biased. (3) 5c Allocate each of the males a number from 1 to 300 B1 3.1b 3rd Understand and Use calculator or number generator to generate 50 different 1.1b B1 carry out simple random numbers from 1 to 300 inclusive. random sampling. Select males corresponding to those numbers. B1 1.1b (3) 5d 300 ÷ 50 = 6 B1 3.1b 3rd Understand and Use a random number generator to select the first name (or one B1 1.1b carry out simple of the first 6 names on the list) as a starting point and then select random sampling. every 6th name thereafter to get 50 names. (2) (9
Q Scheme Marks AOs Pearson Progression Step and Progress descriptor 5a Quota. B1 1.2 3rd Understand quota and opportunity sampling. (1) 5b Advantages – two from: easy to get sample size inexpensive fast can be stratified if required. B1 B1 2.4 2.4 5th Select and critique a sampling technique in a given context. Disadvantages – one from: not random could be biased. B1 2.4 (3) 5c Allocate each of the males a number from 1 to 300 B1 3.1b 3rd Understand and carry out simple random sampling. Use calculator or number generator to generate 50 different random numbers from 1 to 300 inclusive. B1 1.1b Select males corresponding to those numbers. B1 1.1b (3) 5d 300 ÷ 50 = 6 B1 3.1b 3rd Understand and carry out simple random sampling. Use a random number generator to select the first name (or one of the first 6 names on the list) as a starting point and then select every 6th name thereafter to get 50 names. B1 1.1b (2) (9