disproportionate stratified sampling

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A sampling method in which the size of the sample drawn from a particular stratum is not proportional to the relative size of that stratum. For example, a stratum could be large supermarkets, which may only account for 20% of all grocery stores – although they account for 80% of grocery sales. In this case, a disproportionate sample would be used to represent the large supermarkets to reflect their sales (i.e. 80%) rather than the number of stores. Compare proportionate stratified sampling. See stratified sampling.

Subjects: Business and Management.

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