Question

How is life expectancy measured​

Answer 1

Answer:

Life expectancy is calculated by constructing a life table. A life table incorporates data on age-specific death rates for the population in question, which requires enumeration data for the number of people, and the number of deaths at each age for that population.

Answer 2

Answer:

life expectancy is based on an estimate of the average age that members of a particular population group will be when they die.

Explanation:

Life expectancy tables are calculated based on death probabilities according to Farr's death rate method: qx = Mx / (Bx + (Mx/2)) where Mx = the number of deaths at the age of x to under x+1 years in the reported period

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