Population projection, in the field of demography, is an estimate of a future population. In contrast with intercensal estimates and censuses, which usually involve some sort of field data gathering, projections usually involve mathematical models based only on pre-existing data may be made by a governmental organization, or by those unaffiliated ...
Found on
http://en.wikipedia.org/wiki/Population_projection
A population projection gives a picture of what the future population may look like, based on knowledge of the past and taking, for the future, hypotheses based on fertility, mortality and migrations. The demographic projections are made by INSEE on the basis of the results of the population census. They can be made for the whole of the territory ...
Found on
http://www.encyclo.co.uk/local/21732
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