Question

Which of the following formula correctly defines mortality?

(a) Mortality = \(\frac{Number \, of \, deaths \, per \, year}{Mid-year \, population}\) x 1000

(b) Mortality = \(\frac{Number \, of \, births \, per \, year}{Mid-year \, population}\) x 1000

(c) Mortality = Number of deaths x 1000

(d) Mortality = Number of births x 1000

The question was posed to me during an interview for a job.

My question comes from Population Growth in chapter Organisms and Populations of Biology – Class 12

Answer 1

Right answer is (a) Mortality = \(\frac{Number \, of \, deaths \, per \, year}{Mid-year \, population}\) x 1000

Easy explanation: The growth rate is the increase in population due to an actual number of individuals added to the population. Usually in India, the growth rate is calculated every 10 years.