FRHD 3070 Lecture Notes - Lecture 18: Simple Random Sample, Snowball Sampling, Experience Sampling Method
13 Dec 2016
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Document Summary
Need representative samples in order to generalize results (external validity generalize small sample to larger population) Definition sampling strategy where subjective judgments play a role in selection of the sample. Convenience sampling select cases based on their availability for the study (i. e. going into a grocery store and asking whoever is around) Purposive (purposeful) get all possible cases that fit particular criteria, using various methods (i. e. purposely seek out older vs. younger participants) Quota (type of convenience sampling) get a pre-set number of cases in each of several categories that will reflect the diversity of the population using convenient methods (i. e. 5 males/5 females under 30, 10 males/10 females 30-60 etc. ) Deviant cases select cases that substantially differ from the dominant pattern. Based on probability and mathematics want to end up with a random sample. Definition sampling approaches in which every member of the population has a possibility of being included in the sample.
