7. The population pyramid (The age-sex pyramid)

The age-sex structure of a population refers to the number of females and males in different age groups. A population pyramid is used to

show the age-sex structure of the population. The shape of the population pyramid reflects the characteristics of the population. The left side shows the percentage of males while the right side shows the percentage of women in each age group. The following three diagrams show different types of Population Pyramids.