Question
Question (4 marks)
A school has 540 Year 10 students and 360 Year 11 students. A stratified sample of 60 students is to be taken.
(a) Calculate how many Year 10 and Year 11 students should be in the sample. (3) (b) Give one advantage of stratified sampling over simple random sampling. (1)
4 marks · take your time before peeking.
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