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GCSE Sociology · key term
Selecting participants non-randomly until preset numbers for relevant categories have been filled.
Used by AQA and Eduqas
Paper 1, Paper 2
Revise: Research DesignQuota sampling sets numbers to recruit from relevant categories, often reflecting their proportions in the population. A researcher then approaches people until each quota is filled, as in street interviews used in market research. This can be quicker and cheaper than organising random selection and does not require a complete list of names.
Component 2
A technique in which researchers recruit a specified number of participants from particular categories, without randomly selecting individuals within them.
Distinguish stratified random sampling from quota sampling: both use categories, but only stratified random sampling selects randomly within them.
For stratified sampling, explain both proportional representation and random selection within each subgroup. Quota sampling does not require random selection within categories.
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Quota sampling also sets targets for particular categories, but people within those categories are not selected randomly. A researcher might approach people in a shopping area until the required numbers in each age category have agreed to participate. Market researchers often use this technique.
