Term Definition
Probability proportional to size (PPS)

A sampling method that assures that sample estimates of totals or percentages (e.g. the estimate of the percentage of men living in Mexico based on the sample) equal population totals or percentages (e.g. the estimate of the percentage of men living in Mexico based on Census data). The adjustment cells for postratification are formed in a similar way as strata in sample selection, but variables can be used that were not on the original sampling frame at the time of selection.

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Synonyms: probability proportional to size