Prospective Changes in National Populations and Language-Defined Populations, and Projection Methods

  • Jacob S. Siegel


Estimates and projections of population are widely used by national governments for two main purposes, namely, to distribute political power or representation and to distribute money to subordinate political jurisdictions. The overall purpose is public planning, and that is, by extension, the use made of estimates and projections by businesses, profit and non-profit organizations, political parties, and others. Estimates and projections are needed for much more than national total populations. They are needed for demographic and socioeconomic groups at the national level and for the principal geographic subdivisions as well. There is a special public need for estimates and projections of population groups that have social and economic characteristics that differ widely from the majority and that, therefore, may require special services from the government or private agencies. A language-defined populations can be such a population group, particularly if it is concentrated in some geographic part of a country.

References and Suggested Readings

Prospective Population Changes and Methods of Projection

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Estimates and Projections of Language-Defined Populations

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Evaluation of Demographic/Linguistic Estimates and Projections

  1. Lum, K., Price, M., & Banks, D. (2013). Applications of multiple systems estimation in human rights research. American Statistician, 67(4), 191–200.CrossRefGoogle Scholar
  2. Siegel, J. S. (2002). Applied demography: applications to business, government, law, and public policy. San Diego: Academic Press.Google Scholar

Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  • Jacob S. Siegel
    • 1
  1. 1.North BethesdaUSA

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