Question

explain the form of life expectancy of birth

Answer 1

If a child is born today in a country where the life expectancy is 75, they can expect to live until they are 75… right? The statistic “Life expectancy at birth” actually refers to the average number of years a newborn is expected to live if mortality patterns at the time of its birth remain constant in the future.


This is called life expectancy of birth.

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Answer 2

Life expectancy, estimate of the average number of additional years that a person of a given age can expect to live. The most common measure of life expectancy is life expectancy at birth. Life expectancy is a hypothetical measure. It assumes that the age-specific death rates for the year in question will apply throughout the lifetime of individuals born in that year.

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