population studies: defining our terms

1. life expectancy- the expected number of years of life remaining at a given age. http://en.wikipedia.org/wiki/Life_expectancy
Japan- 82.12 years (3)
France- 80.98 years (8)
 Kenya- 57.86 years (189)
Cuba- 77.45 years (55)
United States- 78.11 years (49)
Afghanistan- 44.4 years (219)

2. crude birthrate- the childbirths per 1,000 people per year. http://en.wikipedia.org/wiki/Crude_birth_rate
Japan- 7.64 births (222)
Kenya- 36.64 births (67)
Ethiopia- 43.66 births (7)
United States- 13.83 births (154)
Germany- 8.18 births (220)

3. crude death rate- total number of deaths per year per 1,000 people. http://en.wikipedia.org/wiki/Crude_death_rate
Afghanistan- 17.83 deaths (7)
Kenya- 9.72 deaths (67)
United States- 8.38 deaths (99)
Japan- 9.54 deaths (69)
Mexico- 4.8 deaths (192)

4. RNI (rate of natural increase) crude birthrate minus the crude death rate of a population. http://en.wikipedia.org/wiki/Rate_of_natural_increase

5. TFR (total fertility rate)- the average number of children that would be born to a woman over her lifetime. http://en.wikipedia.org/wiki/Total_fertility_rate
Niger- 7.68 children (1)
Afghanistan- 5.5 children (13)
Japan- 1.2 children (218)
United States- 2.06 children (126)
Germany- 1.42 children (196)

6. net migration rate- the difference of immigrants and emigrants of an area of a period of time, usually divided per 1,000 inhabitants. http://en.wikipedia.org/wiki/Net_migration_rate
Mexico- -3.61 migrants (153)
United Sates- 4.32 migrants (25)
United Arab Emirates- 22.98 migrants (1)
Argentina- 0 migrants (73)
Saudi Arabia- -7.6 migrants (171)
Uganda- -8.83 migrants (173)

7. population pyramid- a graphical illustration that shows the distribution of various age groups in a human population. http://en.wikipedia.org/wiki/Population_pyramid