What are Demographic Methods? Demographic methods use data such as annual totals of births and deaths, and an estimate of initial population size, to infer refined demographic statistics—life expectancy, gross and net reproduction ratios, and even population age structures..
It is these three variables (mortality, fertility, and migration) that contribute to population change.
Demographers gather data mainly through government censuses and government registries of births and deaths.
However, these sources can be inaccurate depending on the precision of government records..
The common variables gathered in demographic research include age, sex, income level, race, employment, location, homeownership, and level of education.
Demographical information makes certain generalizations about groups to identify customers..
Demographers study five processes: fertility, mortality, marriage, migration and social mobility.
These processes determine populations' size, composition and distribution..
