What does a population pyramid primarily display?

What does a population pyramid primarily display?

• A. A bar graph representing the distribution of population by age and sex.
• B. A line chart of population growth over time.
• C. A pie chart of ethnic groups.
• D. A map showing population density by region.

Answer: (A)

A population pyramid is a bar chart that shows how a population is distributed across age groups and between sexes. Each horizontal bar represents an age cohort, with one side for males and the other for females, so you can see, at a glance, how many people are in each age range. This format reveals the age structure of a population—whether it has many young people (a broad base) or a lot of older people (an upper, top-heavy shape)—and indicates birth rates and life expectancy influences. Because it combines age and sex information in a single chart, it’s the best way to display distribution by age and sex. The other options describe different kinds of charts: a line chart tracks changes over time, a pie chart shows shares of categories like ethnic groups, and a map shows where people live, not the age-by-sex distribution.

A population pyramid is a bar chart that shows how a population is distributed across age groups and between sexes. Each horizontal bar represents an age cohort, with one side for males and the other for females, so you can see, at a glance, how many people are in each age range. This format reveals the age structure of a population—whether it has many young people (a broad base) or a lot of older people (an upper, top-heavy shape)—and indicates birth rates and life expectancy influences. Because it combines age and sex information in a single chart, it’s the best way to display distribution by age and sex. The other options describe different kinds of charts: a line chart tracks changes over time, a pie chart shows shares of categories like ethnic groups, and a map shows where people live, not the age-by-sex distribution.