N2008 P2 Q5
N2008 P2 Q5
Junior College 2
4 marks
A school has 950 pupils. A sample of 50 pupils is to be chosen to take part in a survey. Describe how the sample could be chosen using systematic sampling.[2]
The purpose of the survey is to investigate pupils’ opinions about the sports facilities available at the school. Give a reason why a stratified sample might be preferable in this context.[2]
Solution:
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Answer:Random start from 1–19, then every 19th pupil. Stratification ensures proportional representation of groups whose opinions may differ.
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