Discussion
Which of the following is/are most suitable diagram for representing the age-sex structure of population ?
(1) Pie diagram
(2) Pyramid diagram
(3) Dot method
(4) Triangular graph
Answer: C
The most suitable diagram is only (2), the pyramid.
An age-sex pyramid shows the population in age groups as horizontal bars, males on one side and females on the other, so both age and sex structure, and the shape that reveals growth or ageing, appear in one diagram.
A pie diagram can show only the share of a few categories at a time and cannot show age and sex together. The dot method maps distribution over space, and a triangular graph shows three components that add up to 100 percent, such as sectors of employment.
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