Question

13. Explain how natality and mortality are calculated.​

Answer 1

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Answer:

A precise estimate of the natality rate (or birth rate) could be calculated by dividing the number of births by the sum of time at risk of giving birth over all individuals.This gives the crude natality rate (or crude birth rate). For human populations it is commonly expressed per 1000 of the population.

Answer 2

Natality is a measure of the birth rate of population. It is the ratio of the number of births to the size of the population. Mortality is the measure of number of individuals dying per unit time.

Explanation:

• Natality gives the indication or the capacity of population to increase itself.
• Natality considers the average reproductive capacity or birth rate.
• It is calculated by dividing the number of births by the sum of time at risk of giving birth over all the individuals.
• In humans it is expressed per 1000 of the population.
• The survival rate matters more in a study of organism, population, race.