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1. One that lives or is located outside or at the edge of a given area: outliers of the forest standing in the field.
2. One that exists outside or at an extreme of a category, pattern, or expectation; an extreme case or exception: "those egg-laying outliers of mammaldom, the duck-billed platypus and the anteating echidna" (Natalie Angier).
3. A value far from most others in a set of data: "Outliers make statistical analyses difficult" (Harvey Motulsky).
4. A portion of stratified rock separated from a main formation by erosion.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. (Geological Science) an outcrop of rocks that is entirely surrounded by older rocks
2. a person, thing, or part situated away from a main or related body
3. a person who lives away from his place of work, duty, etc
4. (Statistics) statistics a point in a sample widely separated from the main cluster of points in the sample. See scatter diagram
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈaʊtˌlaɪ ər)

1. a person residing away from a business, duty, etc.
2. Geol. a part of a formation left detached through the removal of surrounding parts by erosion.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.outlier - a person who lives away from his place of work
occupant, occupier, resident - someone who lives at a particular place for a prolonged period or who was born there
2.outlier - an extreme deviation from the mean
statistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters
deviation - the difference between an observed value and the expected value of a variable or function
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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References in classic literature ?
The hills are of a remarkable form; they consist of flat patches of table-land, surrounded by low perpendicular cliffs, like the outliers of a sedimentary deposit.
"Eat," said Akela, rising up from the meat Mowgli had brought him, and the Outlier flung himself on it.
"Thou art indeed an Outlier," Mowgli called back; "but we will speak when the dholes are dead.
It was Won-tolla, the Outlier, and he said never a word, but continued his horrible sport beside the dholes.
"Is thy stomach still empty, Outlier?" said Mowgli.
"It is not wise to kill cubs and lahinis," Mowgli went on philosophically, wiping the blood out of his eyes, "unless one has also killed the Outlier; and it is in my stomach that this Won-tolla kills thee."
"I think podcasting is an amazing opportunity to communicate to people and make a huge impact," said Slate, "and the community that Ever Gonzalez is building around the Outlier Brand is amazing value for all those in the podcasting space.
Are the techniques we commonly use in finance to identify and treat outliers appropriate for the data structures we observe in practice?
Outliers are extreme observations that are very dissimilar to the rest of the population.
Seventy years after Muhammad Ali Jinnah, we have a head of the state and leader, who is an outlier. Let's criticise less and celebrate more.
There is certainly a great deal of business benefit to be gained by concentrating efforts on these employee outliers. Top talent will likely produce some of your greatest business successes, and it's certainly a compelling vision to think there's a gifted innovator in your midst who just needs the right encouragement to have an amazing business idea.