A population pyramid is a graphical representation of population composition. In a population pyramid, the total population is divided into various age groups, e.g. 5 to 9 years, 10 to 14 years, etc. For each age group, the percentage of the total population is subdivided into males and females.
The relative number of children (below 15 years) and that of the elderly (above 65 years) shows the relative number of dependents in the population. The relative number of people in the working age (between 15 and 65 years) shows the relative number of productive people.
