assignment fifteen

3 Components of Measuring Population Change

1. Crude Birth Rate (CBR)- total number of live birth in a year for every 1,000 people alive in society
2. Crude Death Rate (CDR)- total number of deaths in a year for every 1,000 people alive in society
3. Natural Increase Rate (NIR)- percentage by which a population grows in a year 

Computation- CBR- CDR = NIR

• NIR is a percentage (n per 100, while CBR and CDR are expressed as n per 1,000)