outlier

Etymology

From outlie + -er.

noun

  1. A person or thing situated away from the main body or outside its proper place.
  2. An exception.
  3. (geology) A part of a formation separated from the rest of the formation by erosion.
  4. (statistics) A value in a statistical sample which does not fit a pattern that describes most other data points; specifically, a value that lies 1.5 IQR beyond the upper or lower quartile.

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