Stratified sampling results in a more accurate overall sample by allowing for explicit analysis of each stratum and by allowing the estimation of the overall sample mean by use of a weighted measure.

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Stratified sampling is designed to improve the accuracy of a sample by ensuring that each stratum, or subset of the population, is represented in proportion to its size. This allows for more explicit analysis and weighting of each stratum, ultimately resulting in a more accurate overall sample estimate.

Stratified Sampling Results in a More Accurate Overall Sample by Allowing