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1. a disadvantage of random sampling is that

  • it has a high risk of sampling error
  • you need a complete and accurate population listing
  • it is prone to bias
  • it is time consuming
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2. a strength of quota sampling is that

  • it can be costly
  • it is representative
  • it is quick and easy
  • it is readily available

3. an advantage of cluster sampling is that

  • it is expensive
  • it is quick and easy
  • its readily available
  • is is very time consuming

4. ensures every member of the population has an equal chance of selection

  • Random sampling
  • Quota sampling
  • Stratified sampling
  • Cluster sampling

5. using stratified sampling over random sampling

  • can increase accuracy
  • requires more visits around the population
  • is simpler to design and interpret


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