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Definition
A population age pyramid consists of two histograms set back to back on a vertical axis, showing the numbers (or percentages of the whole population) of the two genders (separately) by age groups, usually in intervals of 5 years (Weeks, 2012).
Description
A population pyramid is a “picture” illustrating the age structure and the gender structure of the population resident within a particular region or country at a particular point in time, for example, South Africa in 2010. The number of males and females in each age group (usually 5-year cohorts) is given in numbers or in percentages of the total number of people of that country. Population pyramids are essentially graphs and they are called pyramids because in countries or areas which have high birth rates and high death rates (as in many developing countries), the base of the graph is broad and rapidly tapers towards the top (where older ages are depicted) (Weeks, 2012).
Pyramid...
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© 2014 Springer Science+Business Media Dordrecht
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Block, E. (2014). Population Age Pyramid. In: Michalos, A.C. (eds) Encyclopedia of Quality of Life and Well-Being Research. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-0753-5_2208
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