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What is a valid probability sample?

April 26, 2017probability sample valid

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What is a valid probability sample?

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A valid probability sample for the purpose of Synar Regulation inspections is a random sample that includes two key elements: (1) the sample is drawn from a universe of all outlets; and (2) each outlet has a known probability of being selected for inspection, and that probability is not zero. The requirement for a valid probability sample can be met in a number of recognized ways, depending on the circumstances and specific situations.