Graphs, charts and maps can be used to show geographical information. Choosing the correct method of data presentation is important.
Population pyramids are bar charts that show how many people of different ages are living in a place or country.
Population pyramids show the bars arranged sideways, rather than upwards. The x-axis shows the number of people, the y-axis shows their ages. The bars on the left show the number of males and the bars on the right show the number of females.
A population pyramid for a developed country is usually bullet-shaped like the one below:
A population pyramid for a developing country is usually triangle-shaped like the one below:
When interpreting a population pyramid, you should include: