Outlier /(?)/

Out·li·er

Outlier

n.
  1. One who does not live where his office, or business, or estate, is.
  2. That which lies, or is, away from the main body.
  3. A part of a rock or stratum lying without, or beyond, the main body, from which it has been separated by denudation. (Geol.)
  4. A datum that lies significantly beyond the main cluster of data points on a graph or diagram; -- suggestive of an error in measurement. (Statistics)