Formulas Flashcards
1
Q
Birth Rate (BR)
A
the number of births / total population * 1000 people
2
Q
Death Rate (DR)
A
the number of deaths per year / total population * 1000 people
3
Q
Natural Increase Rate (NIR)
A
birth rate - death rate
4
Q
Immigration Rate (IR)
A
the number of immigrants / the population * 1000
5
Q
Emigration Rate (ER)
A
the number of emigrants / population * 1000
6
Q
Net Migration Rate (NMR)
A
immigration rate - emigration rate
7
Q
Population Growth Rate (PGR)
A
natural increase rate + net migration rate
8
Q
Rule of 70
A
70 / population growth rate
