age pyramid

An age pyramid, or population pyramid, is a graphical representation that shows the distribution of different age groups within a population, typically divided by gender. The shape of the pyramid reveals demographic trends, such as birth rates and life expectancy. A wide base indicates a high birth rate, while a narrow top suggests a lower life expectancy. Age pyramids help policymakers and researchers understand population dynamics, predict future needs for services like healthcare and education, and analyze social and economic challenges a population may face over time.