Chapter 4 - Bias

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Last updated 4:48 PM on 10/7/26
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6 Terms

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Undercoverage

Occurs when some members of the population cannot be chosen in a sample.

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Nonresponse

Occurs when an individual for the sample can’t be contacted OR refused to participate.

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Response Bias

Systematic pater of inaccurate answers

  • Misremember

  • Lie

  • Change answers based on the interviewer

  • Wording of question


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What causes bias?

Undercoverage, nonresponse, response bias

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Inference

Drawing conclusions about a population on the basis of sample data

  • Infer information about the population from what we know about the sample.


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