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    Appropriateness of samples

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    When would a stratified sample be more appropriate than a simple, random sample?

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    A stratified random sample is an alternative to a simple random sample that provides more precision. In a simple random sample, you would select subjects randomly from a single large pool. In a stratified random sample, you would divide this large pool of subjects into several groups (strata) and then randomly select subjects from within each group. The number of subjects selected from each ...

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    This solution explains in detail when a stratified sample would be more appropriate than a simple, random sample.