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2.1 Sampling

2.1 Sampling

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Question 3

A school has three year groups containing 180, 120 and 100 students. A proportional stratified sample of size 40 is required.

Calculate the number of students from the first year group who should be selected.

[2]
Markscheme

2.1 Sampling Questions

  1. A Level
  2. /Maths
  3. /2.1 Sampling

36 exam-style questions on OCR (MEI) A Level Maths 2.1 Sampling, covering 2.1.1 Population and sample, 2.1.2 Samples to make informal inferences, 2.1.3 Random sampling, 2.1.4 Variety of sampling techniques, 2.1.5 Select or evaluate sampling techniques, and 2.1 Sampling. Each one has a worked solution and a mark scheme showing where the marks go.

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