PSYC 2030 Lecture Notes - Lecture 11: Symposium On Principles Of Programming Languages, Sampling Frame, Point Estimation
10 Dec 2015
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Rubin in a sense all studies lie on a continuum from irrelevant to relevant with respect to answering a question. Eg: randomized lab type experiments that use opportunity samples of the first available students in college settings have a restricted sample of participants but usually have a high degree of control over the variables. Contrast: those who do survey studies select the potential respondents using special sampling procedures in order to generalize their descriptive findings to a specific larger pool (population) of people o. If they used opportunity samples, spurious results and misleading generalizations about the population would compromise the scientific integrity of their work. They may compare the sample with the most recent census data, but it is well known that census data are problematic because it is impossible to contact every member of the population. They can never be 100% sure of their generalizations o.
