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Karla Jauregui Sandoval
Karla Jauregui Sandoval
Image Courtesy of Wikimeadia
An age structure diagram is a model that predicts the population growth rate by a shape. It shows a comparative ratio of males to females and the bars show various age groups from infants to adolescents to reproductive and post-reproductive stages. Certain age structure diagrams will have more representation at one end, while others will have more representation at the other end (or in the middle!).
Image Courtesy of PopulationEducation
The diagram below shows New Zealand and an example of a population with stable numbers. This population has about the same amount of individuals in each age bracket. This suggests parents have access to reproductive education and can choose replacement level reproduction, or to have about two children per each couple.
Image Courtesy of PopulationEducation
In conclusion, age structure diagrams help us visualize at which point a society currently is in terms of average age and how they may react given a change in birth/death rate.
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