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2 Statistics

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Question 217

A factory list contains 1440 employees arranged in a repeating pattern of 12 job roles. A systematic sample of 120 uses interval 12.

a.

Explain why this sample may be seriously biased.

[2]
b.

Describe a simple random alternative.

[2]
c.

State one practical advantage the systematic sample would otherwise have.

[1]
Markscheme

2 Statistics Questions

  1. A Level
  2. /Maths
  3. /2 Statistics

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