Quota Sampling
Quota sampling is often used in market research because
it does not require a list of potential respondents (a 'sampling
frame'). It is not based on random selection. Instead, respondents who
fit into predetermined categories ('quota controls') are found by interviewers
until their quotas are filled. For this survey, the quota controls to
be used are sex and age (young, middle, and old).
A recent census has reported that there are:
5252 |
males |
5789 |
females |
2940 |
young |
3921 |
middle aged |
4180 |
old |
in the town. You should choose the numbers in your sample
in each category so that they are approximately representative of the
town as a whole.
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The sampling procedures are:
- simple random sampling
- clustered random sampling
- stratified random sampling
- quota sampling
- summary and finish
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