8.1 Population Calculations

Crude Birth Rate CBR (# of births per thousand people) = (births/population)*1000
Crude Death Rate CDR (# of deaths per thousand people) = (deaths/population)*1000
Natural Increase Rate NIR (% growth of a population per year) = (CBR-CDR)/10
Doubling Time DT (time for population to double) = 70/NIR
Total Fertility Rate = # of births/women of child-bearing age