What graphical representation is used to display age distribution by sex in a population?

The population pyramid is the appropriate graphical representation used to display age distribution by sex in a population. It visually depicts the age structure of a population, where one side of the pyramid typically represents males and the other represents females. The different age cohorts are shown along the vertical axis, while the horizontal axis displays the population size for each sex.

This visual format allows for easy comparisons between genders at different ages, showing patterns such as the proportion of elderly people or the number of young dependents in a given population. In many cases, population pyramids also illustrate trends such as aging populations or youth bulges, depending on the shape of the pyramid.

In contrast, demographic charts and age distribution graphs may provide similar information but do not specifically highlight the gender aspect in such a clear and effective manner. A population density map focuses on the number of people living in a given area rather than their age and sex distribution. Thus, the population pyramid is uniquely suited for analyzing these demographic characteristics.