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I am sure you all know the Egyptians or Peruvian Pyramids.

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But have you heard about population pyramids?

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A population pyramid is a graphical representation of the distribution by age and sex of the population in a territory.

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Male population is represented on the left and female population on the right.

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The horizontal axis shows the population values of those age groups represented in the vertical axis.

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Thanks to its shape, we are able to appreciate demographic phenomena such as population aging,

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balance or imbalance between both sexes, the impact of immigration and emigration, etc.

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It also allows us to make comparisons between populations.

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Pyramids helps us know the past and predict the future.