Sampling techniques

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  • Created by: z_mills1
  • Created on: 12-05-14 21:16
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  • Sampling techniques
    • Random
      • every member of the target group has an equal chance of being selected for the sample
      • Advantages
        • random sampling is 'fair'
        • sample is likely to be representative
      • Disadvantages
        • takes more time and effort than other methods
        • doesn't guarantee a representative sample
    • Opportunity
      • when the researcher samples whoever is available and willing to be studied
      • Advantages
        • quick and practical way of getting a sample
      • Disadvantages
        • sample is unlikely to be representative of a target group or population as a whole
          • can't generalise the findings of the research
    • Volunteer
      • when people actively volunteer to be in a study by responding to a request for pp's advertised by the researcher e.g. newspaper
      • Advantages
        • allows access to a variety of participants - may make sample more representative and allow for more accurate results
      • Disadvantages
        • sample is biased because some people are more likely to volunteer than others
          • findings cannot be generalised to population


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