Unit 2: 3.3-3.4 Flashcards
(12 cards)
Dependency Ratio
The number of people who are dependent (opposite of independent). Also known as people under 16 or people over the age of 65. Then divided by the # of working people multiplied by 100
Sex Ratio
The amount of men to women in a certain area
Examples: There was a ratio of Women to men @ my party of 4:2
Population Replacement Rate
Demographics
Data about the structures & characteristics of human populations
Fertility
The ability to have children
Examples: My mother no longer has fertility because she cannot bear children
Crude birth rate
The # of births in a certain year for every 1,000 people in a given area
Crude death rate
The # of deaths a given year for every 1,000 people in a certain population
Total fertility Rate
The average # of children a single person will ear from years 15-49
Mortality
Death as a component that affect change in population
Infant Mortality Rate
The # of deaths under the age of 1 for every 1,000 people
Life expectancy
The average # of years a person is predicted to live
Population pyramids
a graph that shows the distribution of age & sex throughout an area
