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MMLU / A researcher mailed 1,000 questionnaires to members of a labor union and…

Problem

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question

A researcher mailed 1,000 questionnaires to members of a labor union and received 300 back. Most of those who returned the questionnaires indicated that they were dissatisfied with the union. Results based only on the returned questionnaires are most likely contaminated by

choices

  1. response rate bias
  2. researcher bias
  3. confusing correlation and causation
  4. statistical regression

subject

sociology

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