Q45 In what way are the quota sample and the stratified sample similar? In what way are they different? What effect does this difference have on the applications for which such samples might be appropriate? [4 Marks]
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difference between quota sampling and stratified sampling is as follows:
quota sampling | stratified sampling |
major differences | |
sampling frame is not required | a sampling frame is required |
random sampling errors cannot be estimated | random sampling errors can be estimated |
selection bias is not minimised | selection bias is minimised |
major similarities | |
purpose of this sampling is to select a representative sample and facilitate subgroup analyses | similar as quota sampling its purpose is to select a representative sample and facilitate subgroup analysis |
population is divided into categories;elements are then selected from each category | population is divided into categories .elements are then selected from each category |
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