SCI 1102 Lecture Notes - Lecture 2: Life Table, Total Fertility Rate, Dependency Ratio
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Count: absolute # of pop. or any demographic event occurring in specific area at specified time period (ex. Rate: frequency of demographic events in a pop. during a time period (cid:523)yr. (cid:524) divided by the pop. (cid:498)at risk(cid:499) of the event occurring at that time period (ex. In 1997 in georgia there were 34 births per. Crude rates are computed for an entire pop. Specific rates are computed for a subgroup. Constant: unchanging, arbitrary number that rates, ratios, Proportion: population subgroup divided by entire population (cid:523)ex. (cid:498)k(cid:499) in formulas proportions can be multiplied by to express these measures in a more understandable fashion. Cohort measure: statistic that measures events occurring in a. Usually 100, 1,000, 100,000 cohort (group of people sharing similar demographic experience), who are observed through time (birth yr. cohorts etc. ) Period measures: measures events occurring to all or part of a pop. during one period of time (ex.
