population pyramid

population pyramid
a graph showing the distribution of a population by sex, age, etc.
[1945-50]

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Universalium. 2010.

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  • Population pyramid — This distribution is named for the frequently pyramidal shape of its graph. A population pyramid, also called an age structure diagram, is a graphical illustration that shows the distribution of various age groups in a population (typically that… …   Wikipedia

  • population pyramid — A diagram that illustrates the distribution of a population by age. The youngest and most numerous age group forms a rectangle at the base of the pyramid; the oldest and least numerous is a small rectangle at its apex …   Big dictionary of business and management

  • population pyramid — /pɒpjəˈleɪʃən pɪrəmɪd/ (say popyuh layshuhn piruhmid) noun a diagram showing the age and sex distribution, and sometimes other features, of a particular population, usually in the form of a horizontal bar graph, the bars representing age… …  

  • population pyramid — Sociol. a graph showing the distribution of a population by sex, age, etc. [1945 50] …   Useful english dictionary

  • Population density — (people per km2) by country, 2006 …   Wikipedia

  • Population decline — can refer to the decline in population of any organism, but this article refers to population decline in humans. It is a term usually used to describe any great reduction in a human population.[1] It can be used to refer to long term demographic… …   Wikipedia

  • Population bottleneck — followed by recovery or extinction A population bottleneck (or genetic bottleneck) is an evolutionary event in which a significant percentage of a population or species is killed or otherwise prevented from reproducing.[1] A slightly different… …   Wikipedia

  • Population growth — is the change in population over time, and can be quantified as the change in the number of individuals in a population using per unit time for measurement. The term population growth can technically refer to any species, but almost always refers …   Wikipedia

  • Population Matters — Founder(s) David Willey Founded 1991 Location United Kingdom Key people …   Wikipedia

  • Population structure — may refer to many aspects of population ecology:* Population stratification * Population pyramid * Age class structure * F statistics * Population density * Population distribution * Population dynamics and population growth * Population genetics …   Wikipedia

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