NUR 80A/B Study Guide - Midterm Guide: Convenience Sampling, Nonprobability Sampling
21 Jan 2016
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Chapter 12- examining sampling plans p. 206-212, 216-223. Sampling: process of selecting a portion of the population. An element ( basic unit about which information is collected) must meet the eligibility criteria to be included in the sample. Main consideration in assessing a sample in a quantitative study it"s resentativeness- the extent to which the sample is similar to the population and avoids bias. Sampling bias: refers to the systematic overrepresentation or underrepresentation of some segment of the population. Quantitative researchers usually sample from an accessible population but want to generalize to a large target population. Target population- entire population in which a researcher is interested. The accessible population- comprises cases from the target population that are accessible to the researcher as a pool of subjects: example. Includes convenience, quota, and purposive sampling: they are convenient and economical, major disadvantage= potential for bias.
