populations and samples

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8 Terms

1
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Simple random sampling

Every possible sample (of a given size) has an equal chance of being selected

2
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Opportunity sampling

Choosing respondents based upon their availability and convenience

3
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Systematic sampling

Taking participants at regular intervals from a list of the population

4
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Stratified sampling

Splitting the population into groups, based on factors relevant to the research, then random sampling from each group in proportion to the size of that Group

5
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Quota sampling

Splitting the population into groups, based on factors relevant to the research, then opportunity sampling from each Group

6
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Cluster sampling

Splitting the population into groups (called clusters), based on convenience, then randomly choosing some clusters to study further

7
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The random methods

Simple random, systematic, stratified, cluster

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Non-random methods

Opportunity, quota