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Life Expectancy

Definition

Life expectancy refers to the average number of years a person is expected to live based on current mortality rates. It's often used as a measure of a nation's health.

Related terms

Mortality Rate: A measure of the number of deaths in a particular population, scaled to the size of that population, per unit of time.

Infant Mortality Rate: The number of deaths per 1,000 live births of children under one year of age.

Demographics: Statistical data relating to the population and particular groups within it.

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AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.