LABRST 3H03 Lecture Notes - Lecture 6: Quota Sampling, Sampling Frame, Systematic Sampling
3 Oct 2020
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Document Summary
Is a small collection of units or cases from a much larger collection or population. Representative samples: sample not useful if it"s not representative, quantitative research interested in representative samples for than qualitative research. Probability versus non-probability samples: non-probability samples are not random. Haphazard (convenience/ accidental: accidental is not random, ex. Saying you spoke with a random person from your neighbourhood isn"t random because the person is bias to your neighbourhood. Quota: categories relevant to their study, and choosing the number of people from each category, ex. An equal amount of respondents that are either male or female: by selecting people until your quota is lled, a rare characteristic that you need will be ful lled, still not representative. Purposive: used when researcher uses their judgement when selecting cases with a speci c purpose in mind and di cult to reach population, informative cases, useful when: Researcher has a speci c focus, therefore can not use a random sample.
