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Demography - • Infant Mortality Rate annual number of...

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Demography Study of the characteristics of human populations Areal distribution of earth's population Consequences of this distribution at multiple scales Census: count of people in a nation, region, city Used to apportion legislative seats Used to redistribute taxes to fund schools, hospitals, other public institutions Vital Records: Births, Deaths, Marriages Birth/fertility Rates Ratio of the number of live births in a single year for every 1000 people in a populations (crude birth rate) Might be different for different groups within a population (age, race) Total fertility rate: number of children born to a women over her lifetime (between the ages of 15-49) Usually countries with low birth rates have low death rates as well Death/mortality Rates Number of deaths per year per 1000 people Also varies within a population Health care availability, social class, occupation, place of residence
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Unformatted text preview: • Infant Mortality Rate: annual number of deaths of infants less than one year of age compared to total number of births that same year. • Life expectancy: average number of years an infant is expected to live ◦ also varies by race, class, gender Population Growth • Natural increase: difference between CBR and CDR • Population doubling time: amount of time it will take for a population to double Demographic Transition • Phase 1: High birth and death rates, low natural increase, low total population • Phase 2: High birth rate, lowering death rate, high natural increase, population growth • Phase 3: Falling birth rates and low death rates, high natural increase, population growth • Phase 4: Low birth and death rates, low natural increase, high total population...
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