SOCIOL 2Z03 Lecture Notes - Scientific American, Business Cycle, Nonprobability Sampling
17 Apr 2013
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Document Summary
Def: the process of selecting observations for study. Representativeness & generalization: representativeness exists when the sample accurately reflects the population, that is, when key traits in the population appear essentially in the same proportion in the sample. In this situation, the findings involving the sample can be generalized to the population. Gender (f=49%, m=51%: run into issues with representativeness of sample; using sample to get at the people in your population (the sample does/does not represent the people in the population) You know its representative when the sample appears more or less the same at the population (need same key traits as people in pop. ) Elements & sampling frames: elements (physical lists of people in the population)- the unit (e. g people, small groups) about which info is collected; sampling frames the actual list of units (elements) in the population. Simple random sampling: each population member has an equal chance of being included in the sample.
