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2.1 K: Statistical sampling

2.1 K: Statistical sampling

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Question 10

An extract from the AQA Large Data Set contains records for 3100 cars, of which 1240 are diesel and 1860 are petrol.

Ismail selects a sample of 50 of these cars. He chooses the sample so that the number of diesel cars and the number of petrol cars in it are in the same proportions as in the extract.

Calculate the number of diesel cars in Ismail's sample.

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Markscheme

2.1 K: Statistical sampling Questions

  1. A Level
  2. /Maths
  3. /2.1 K: Statistical sampling

28 exam-style questions on AQA A Level Maths 2.1 K: Statistical sampling, covering 2.1.1 Populations, samples and sampling techniques. Each one has a worked solution and a mark scheme showing where the marks go.

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