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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.


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


(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.
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
valeur anormale
References in classic literature ?
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.
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.
The Minimally Detectable Bias(MDB) (Kouba and Heroux, 2001) used by many scholars to determine outlier size gave values of 3 cm and 4 m for the carrier phase and pseudorange observations in this dataset, respectively.
Using simulations, this paper shows that SDEA is a useful model for outlier detection.
We present here an iterative outlier removal (IOR) [6] method, a straightforward and efficient approach to identifying outliers that are likely irrelevant to the recalibration process.
The Outlier, from Creative's stable, is an attempt at presenting to you a pair of lightweight, Wireless Headphones that can also work as a standalone MP3 player.
Our collaboration with Outlier is the tip of the iceberg," says Smith.
In fact, any individual observation that appears to depart in some way from the remainder of that set of data is called an outlier [2].
Summary: Actor says his company, Outlier Society Productions, would make it its mission to be more inclusive