Question | Answer |
age structure | Percentage of the population (or number of people of each sex) at each age level in a population. |
birth rate | Annual number of live births in a given country. |
crude birth rate | Annual number of live births per 1,000 people in the population of a geographic area at the midpoint of a given year. |
crude death rate | Annual number of deaths per 1,000 people in the population of a geographic area at the midpoint of a given year. |
death rate | Annual number of deaths in a given country. |
demographic transition | Hypothesis that countries, as they become industrialized, have declines in death rates followed by declines in birth rates. |
emigration | Movement of people out of a specific geographic area. |
family planning | Providing information, clinical services, and contraceptives to help people choose the number and spacing of children they want to have. |
fertility | The number of births that occur to an individual woman or in a population. |
immigration | Migration of people into a country or area to take up permanent residence. |
infant mortality rate | Number of babies out of every 1,000 born each year that die before their first birthday. |
life expectancy | Average number of years a newborn infant can be expected to live. |
migration | Movement of people into and out of a specific geographic area. |
population change | An increase or decrease in the size of a population. |
It is equal to (Births + Immigration) -(Deaths + Emigration). | |
replacement-level fertility | Number of children a couple must have to replace them. The average for a country or the world usually is slightly higher than 2 children per couple (2.1 in the United States and 2.5 in some developing countries) because some children die before reaching t |
total fertility rate (TFR) | Estimate of the average number of children who will be born alive to a woman during her lifetime if she passes through all her childbearing years (15-44) conforming to age-specific fertility rates of a given year. In simpler terms, it is an estimate of th |