GCSE Maths (AQA)

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Populations & Censuses

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Statistics Statistics

Populations & Censuses

4:01 Sampling
Spec S1
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  • A survey is a question or examination of a group of people or objects that provides data about that group.
  • Examples of surveys include general elections, taste testing at a cookie factory, and asking for opinions on a new product.
  • The population is the entire group of interest for a survey.
  • A census is a survey given to the entire population.
  • Censuses are usually avoided due to time, money, and logistical reasons.
  • Primary data is derived from a survey with a specific purpose.
  • Secondary data is derived from a general survey with no specific purpose.
  • Secondary data is useful as it is cheaper and faster to look up from an existing database.

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