Census vs sample decision

A question is this type if and only if it asks to explain what a census is or give reasons for choosing a sample over a census.

1 questions · Easy -2.0

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Edexcel S2 2008 January Q1
4 marks Easy -2.0
  1. Explain what you understand by a census. Each cooker produced at GT Engineering is stamped with a unique serial number. GT Engineering produces cookers in batches of 2000. Before selling them, they test a random sample of 5 to see what electric current overload they will take before breaking down.
  2. Give one reason, other than to save time and cost, why a sample is taken rather than a census.
  3. Suggest a suitable sampling frame from which to obtain this sample.
  4. Identify the sampling units.