An analyst builds a forecast using customer data from one region only because it is easiest to access, and then presents the result as applying to all regions. Which problem is this?
Answer and explanation
Correct answer: B. Selection bias
- Step 1: The sample used was chosen for convenience.
- Step 2: Applying a result from one region to all regions is selection bias.
Answer
Selection bias.
Why not the others: Using customer data is not itself a breach of confidentiality. There is no digit swapping described. Rounding does not create a systematic distortion of this kind.
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