What is the difference between quota and stratified sampling?

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MKBS300
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Report Thread starter 3 years ago
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My definitions in my notes say:
Quota sampling- A non-probability sampling technique where the sample has the same proportions of individuals as the entire population with respect to characteristics.
Stratified sampling- Where the researcher divides the entire population into different subgroups, then randomly selects the final subjects proportionally from the different strata.
But I am failing to see the difference.
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lizardlizard
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Quota sampling is not necessarily truly "random" as it only requires that you ask a certain proportion from each group, whereas stratified sampling requires that you use random sampling techniques.
Essentially, quota sampling is the faster, cheaper, but less reliable method, and can be influenced by the personal bias of whoever is doing the sampling.
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