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Methods of statistical presentation: Age-Sex pyramids

Answer Text:
Methods of Statistical Presentation
Age-sex pyramids
-Is a graph used to present population data showing the different age groups for males and females.
-It is used to show the numbers of different age groups in a population by considering their ages and sex.
-It consists of bars, which are drawn horizontally.
-The length of each bar indicates the number of persons in each age-group in a population.
-Population is usually divided into 5 year age-groups.
-The age-groups are known as cohorts. E.g 0-4, 5-9, 10-14, 15-19, 20-24.
While drawing the pyramid, males are usually represented on the left side of the graph and the females on the right.
-The youngest age-group always forms the base of the graph.