SOAN 2120 Lecture Notes - Lecture 18: Simple Random Sample, Deeper Understanding, European Cooperation In Science And Technology
5 Dec 2016
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Do not usually know their sample size in advance. People you randomly survey on a street corner for example. Ensures they are met so that subsections of society are represented. Still could be random on the street corner, representative of that area: purposive. Use judgement to select cases with a specific purpose in mind. To gain a deeper understanding of a specific type. Researcher continues sampling until all resources are exhausted: sequential. Similar to purposive but the researcher stops when the amount of additional info is small. Once you"ve decided you"ve learned enough: snowball. Uses referrals or networks to draw samples. Network of sampling: deviant (extreme) case sampling. Used in studies of people who deviate from the dominant pattern (people with less predominant characteristics) The goal is to collect info on peculiar or specific cases that are not representative of the whole group. Goal is to make inference about bigger population.
