sampling evaluation

• random sampling: strength and weakness


  strength: no researcher bias

  weakness: the sample won't necessarily be representative-you could randomly select people who are very similar.
• systematic sampling: strength and weakness


  strength: quick and easy to produce a sample

  weakness: no necessarily representative
• stratified sampling: strength and weakness


  strength: should both be representative and unbiased

  weakness: more time consuming than random or systematic sampling
• quota sampling: strength and weakness


  strength: can be used on groups who may otherwise be impossible to get access to.

  weakness: researchers need to have existing relationship to create the sample.