subpopulation

Noun
  1. A population that is part of a larger population (synset 106035916)
    referred to in: statistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters
    is a type of: population, universe - (statistics) the entire aggregation of items from which samples can be drawn
    subtypes: stratum - a subpopulation divided into a stratified sampling

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