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Unformatted text preview: Demography is the study of factors that affect population density and dispersion patterns. Demography is the study of the vital statistics of populations and how they change over time. Of particular interest are birth rates and how they vary among individuals (specifically females), and death rates. A life table is an age-specific summary of the survival pattern of a population. The best way to construct a life table is to follow the fate of a cohort, a group of individuals of the same age, from birth throughout their lifetimes until all are dead. To build a life table, we need to determine the number of individuals that die in each age group and calculate the proportion of the cohort surviving from one age to the next. A graphic way of representing the data in a life table is a survivorship curve....
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- Fall '10