Sampling Vocab

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12 Terms

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Census

A survey of the whole population

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Judgement Sample

A sample based on the sampler’s judgement and not randomness

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Convenience Sample

Samples only those who are convenient to sample, biased

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Simple Random Sample

Uses a random number generator

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Systematic Sample

Randomly selects one number then every nth person after

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Cluster Sample

Randomly selects one item then those around them in a group

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Stratified Sample

Sorts people into groups based on characteristics, then selects from each group

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Accuracy

Level of bias

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Precision

Level of variability

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Error

Variability across different samples

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Bias

Under or overrepresentation

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Pilot Survey

A smaller, test survey done before the real one