Diagram Age Transcript For Free

A population pyramid is a graph that shows the distribution of ages across a population divided down the center between male and female members of the population. The graphic starts from youngest at the bottom to oldest at the top.

Constructing and Interpreting an Age Structure Diagram If the diagram shows a generally straight up and down shape except for the older age groups, a stable population is thus revealed. If the diagram shows a top-heavy shape, then a decline is forecast for that population.

There are generally three types of population pyramids created from age-sex distributions-- expansive, constrictive and stationary. Examples of these three types of population pyramids appear at the end of this report.

One of the tools that demographers use to understand populations is the age structure diagram. This diagram shows the distribution by ages of females and males within a certain population in graphic form.

The age structure is closely related to the birth rate, death rate and migration of a population. In the region with high birth rate, the proportion of children tends to be higher, whereas in the region with low birth and death rate, the percentage of elderly population tends to be higher.

The percentages of the population will be plotted along the X-axis with females to the right of the center line and males to the left of the center line. The age groups will be running up the Y-axis with the youngest at the bottom and the oldest at the top.

One of the tools that demographers use to understand population is the age structure diagram (it is sometimes called a population pyramid, but it is not always pyramidal in shape). This diagram shows the distribution by ages of females and males within a certain population in graphic form.