sampling methods

  • Created by: A-bee
  • Created on: 04-06-18 13:50
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  • Sampling Methods
    • representative
      • systematic
        • strengths - reduces selection bias
        • limitations - order of list and cause bias, risk of being unrepres
      • stratified
        • strengths - repres, reduces selection bias
        • limitations - conditions must be met, sorting accurately can be difficult
      • cluster
        • strengths - time and cost efficient, larger sample size
        • limitation - costs between travel, ppl in a cluster may be similar
      • quota
        • strengths - smaller but repres, not dependent on frame
        • limitations - needs to know demographics, inaccuracies hard to spot
    • random
    • non-repres
      • snowball
        • strengths - marginalised groups, prevents lack of participants
        • limitations - bias, respondents may refuse to give names
      • opportunity
        • strengths - easy, inexpensive
        • limitations - unrepres, subject to bias
      • volunteer
        • strengths -large sample size
        • limitations - may similar

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