Quota Sample

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Quota Sample

In focus groups, the predetermination to include only a certain number of persons from stated demographic groups. The quota sample system allows focus groups to be representative while keeping them manageable. For example, a quota sample may limit itself to three persons under 25, three between 25 and 50, and three over 50.
References in periodicals archive ?
Quota sampling is at risk for substantial bias; in contrast, the random selection technique inherent in probability sampling provides a measure of protection from bias.
Data was collected over three weeks through quota sampling.
2) Single-phase quota sampling with controls on recruitment derived from large-scale probability TV Establishment Surveys.
Quota sampling and weighting were employed to balance demographics and ensure that the sample's composition reflects that of the actual U.
Methods such as cluster sampling, probability proportional to size sampling, quota sampling, and the ratio method of estimation, etc.
There is a deep and fundamental disagreement between the great majority of North American research practitioners and their counterparts in Europe and elsewhere on the validity of quota sampling for in-person surveys.