Which term best describes a population in which the number of people in each age group is about the same as in other age groups?

Which term best describes a population in which the number of people in each age group is about the same as in other age groups?

• A. Stationary
• B. Growing
• C. Declining
• D. Balanced

Answer: (A)

In population studies, the distribution of people across age groups reveals how the population is changing. When the number of people in each age group is about the same, the population isn’t growing or shrinking over time—the age structure stays essentially the same. This occurs when births balance deaths and there isn’t a lot of net migration. That steady, unchanging age layout is described as stationary. If there are many more young people, the population is growing and has a broad base. If older groups dominate, the population is declining or aging. While a balanced distribution might seem similar, the standard term for a flat, constant age structure is stationary.

In population studies, the distribution of people across age groups reveals how the population is changing. When the number of people in each age group is about the same, the population isn’t growing or shrinking over time—the age structure stays essentially the same. This occurs when births balance deaths and there isn’t a lot of net migration. That steady, unchanging age layout is described as stationary.

If there are many more young people, the population is growing and has a broad base. If older groups dominate, the population is declining or aging. While a balanced distribution might seem similar, the standard term for a flat, constant age structure is stationary.