population balance key terms

what is natural increase?

When there is a growth of population (a higher birth rate than death rate) we say that there is a natural increase.

what is natural decrease?

If there is a decline in the number of people (a lower birth rate than death rate) we say that there is a natural decrease.

what is crude birth rate?

The number of live births each year per 1,000 of the population in an area

what is crude death rate?

The number of deaths each year per 1000 of the population in an area.

what is the total fertility rate?

The number of children a woman is expected to have during her reproductive lifetime (15-49) based on the current birth rates.

what is infant mortality rate?

The number of deaths per 1,000 children (infants) born, in the first year of their life in a given year

what is the replacement rate?

When there are enough children born to balance the number of people who have died.