Quota sampling, Basic Statistics

Quota Sampling: in stratified the cost of taking random samples from individual strata is often so expensive that interviewers are simply give quota to be filled from different strata the actual selection of items for sample being left to the interviewers judgment. This is called quota sampling. The size of the quota for each stratum is generally propionate to the probability sampling. Quota samples generally happen to be judgment samples rather than random sample.

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