Question
Under the common 1.5×IQR rule, an observation above which value is flagged as a potential high outlier?
Select an option. Your answer will be checked instantly.
Correct Answer: A. Q3 + 1.5 × IQR
Explanation:
The upper fence is Q3 plus 1.5 times the interquartile range.
Points beyond it are flagged for investigation, not automatically deleted.
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