How is life expectancy measured
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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.
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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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