Demography, Defined
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Demography is the study of populations, using fertility, mortality, and migration to describe how a population's size and composition change over time.
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A national census office reconstructing a country's postwar population trajectory from birth, death, and migration records illustrates demography's method.
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Demography studies population-level patterns; it does not predict any individual's birth, death, or migration decision.
Builds on
- Nothing — this is a starting point.