Studied by 5 peopleGeography
Population Patterns
AP Human Geography
Unit 2: Population and Migration Patterns and Processes
formulas and rates of population
Crude Birth Rate (CBR)
total number of live births in a year for every 1,000 people alive; Number of Live Births/Total population x 1,000
Crude Death Rate (CDR)
total number of deaths in a year for every 1,000 people alive; Number of deaths/total population x 1,000
Natural Increase Rate (NIR)/Rate of Natural Increase (RNI)
percentage by which a population grows in a year; does NOT include migration; Birth Rate - Death Rate/10% - negative NIR = population shrink
Total Fertility Rate (TFR)
average estimate(?) of children a woman will have in her lifetime
Replacement rate (needed to replace a population), (TFR)
2.1
Zero Population Growth (ZPG)
occurs during stages 4-5 of the DTM, where there is little to none increase in a population
Infant Mortality Rate (IMR)
total number of deaths under infants of under one years of age - in ayear for every 1,000 births
Doubling Time
the amount of time it takes for a population to double
Net Migration Rate (NMR)
The rate in which migration is increasing or decreasing
Dependency Ratio
the number of people that are too old or young to work compared to number of working-age people
Arithmetic Density
total number of people/land area
Physiologic Density
total number of people/area of arable farm land; tells us what countries have arable land and who doesn’t
Agricultural Density
Ratio of number of farmers to arable land; tells us the stage of the DTM the country is in; low = MDC and has the tech to have less famers, vice versa
Note
Flashcard