In a ___________ the population is divided into mutually exclusive groups and random samples are drawn from each group
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Stratified random sample
In mathematics, stratified sampling is a method of taking samples from people who can be subdivided into smaller quantities. In a statistical survey, where the population below the population varies, it would be advisable to sample each sub-population independently.
In a stratified random sample the population is divided into mutually exclusive groups and random samples are drawn from each group.
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