Samples and Census

Advantages and disadvantages of sampling and using a census

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  • Created by: Abigail
  • Created on: 25-05-11 12:54

Census

Advantages:

  • Every member of the population is used
  • Unbiased
  • Gives an accurate answer

Disadvantages:

  • Expensive
  • Takes a long time to do
  • Hard to ensure the entire population is surveyed
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Sampling

Advantages:

  • Cheaper than a census
  • Advantageous when testing items results in their destruction eg. testing the lifetime of a light bulb
  • data is more readily available

Disadvantages:

  • Natural variation generates uncertainty
  • Bias - may not be truly representative of the population. This can occur if the person taking the sample allows personal feelings to influence their choices.
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