Practice Quiz

Six Sigma Black Belt

Category - Black Belt

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When designing a survey or questionnaire as part of a marketing campaign, the following survey error occurs when an entire group is excluded from participating in the survey and has no chance of being included in the future:
  1. non-response bias
  2. selection bias
  3. discrimination bias
  4. urban bias
Explanation
Answer: B - Selection bias is a type of survey error when an entire group is excluded from participation.

Key Takeaway: When an entire group is excluded from participating in a survey and has no chance of being included in the future, this is referred to as a selection bias. A selection bias threatens to skew results from a survey, especially if the excluded group is large and/or particularly influential in their purchasing habits.
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