SOCI 217 Lecture Notes - Lecture 9: Stratified Sampling, Systematic Sampling, Sampling Frame
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Tested on concepts, no particular examples from textbook. Draw elements from homogeneous subsets of the population. Assumption: subjects who are homogeneous on the stratification variables may be homogeneous in other variables as well. E. g. women may display similar voting patterns, older people may have similar political views. Limited by what you already know about population. Choice of stratification variables depends on info available about the population at large. Begins with a table describing the characteristics of the target population and divided into homogeneous strata. Figure out the numbers representing those percentages in the sample population. Used when it is either impossible or impractical to compile an exhaustive list of the elements that compose a large population. Population elements may already be grouped into subpopulations, of which lists actually exist. Researchers can randomly choose a sample of these subpopulations. Primary area - - > sample location - - > chunk - - > segment - - > housing unit.
