Sampling

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  • Sampling
    • Systematic
      • Every person so often on a list gets chosen
      • Unbiased- generalise results
        • Stratified
          • Subgroups are identified & a sample chosen from within
          • Time consuming
    • Random
      • Unbiased- generalise results
        • Stratified
          • Subgroups are identified & a sample chosen from within
          • Time consuming
      • Everyone has an equal chance to be picked
    • Opportunity
      • Using whoever is available
      • Biased sample
      • Practical
    • Volunteer
      • Advertise
      • Varied range of people but biased
      • Practical

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