In what circumstances can the IQR method lead to incorrect detection of outliers?

  • When data has a high standard deviation
  • When data is heavily skewed or bimodal
  • When data is normally distributed
  • When data is uniformly distributed
The IQR method might lead to incorrect detection of outliers in heavily skewed or bimodal distributions because it's based on percentiles which can be influenced by such irregularities.
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