Population pyramid is also called age sex pyramid. It shows:

• It shows division of population into various age groups like 5 to 9 years, 10 to 14 years etc.
• It gives the percentage of male female ratio, in each age group.
• It tells about number of dependents-young and old along with number of economically active peoples.
• It helps to understand the economic, health, social structure by indirectly referring to death, birth rate in terms of age and sex.

A population pyramid in which the base is broad and the top part is narrow means that although a large amount of births take place, not all grow up to be adults and old;it means many die before reaching these ages. This indicates a large death rate and Kenya shows such a pyramid. This means a high population growth rate.

In countries like India, the death rate is decreasing, so the pyramid is broad in the younger age groups, and the size of the pyramid decreases steadily.