- an observation that is well outside of the expected range of values in a study or experiment, and which is often discarded from the data set: Experience with a variety of data-reduction problems has led to several strategies for dealing with outliers in data sets.
- a person whose abilities, achievements, etc., lie outside the range of statistical probability.
Origin of outlier
Examples from the Web for outliers
And no issue should be defined by its outliers because it paints a false picture.
Surveys were assessed for outliers and inconsistencies and messy data was reconciled by contacting individual schools.The Daily Beast's Top High Schools 2014: Methodology|Brandy Zadrozny|August 27, 2014|DAILY BEAST
Celebrity participants like Zachary Levi—who devotes substantial time to discussing ALS—are outliers.
Americans are the outliers in their skepticism for wines that come in boxes.Taking Boxed Wine Seriously: It’s Not Just for Hobos and Teenagers Anymore|Jordan Salcito|March 15, 2014|DAILY BEAST
Insiders and outliers and nearly everyone else is abuzz: Can Fallon handle the job?Can Jimmy Fallon Be Himself on ‘The Tonight Show’?|Tom Shales|February 17, 2014|DAILY BEAST
The breeze abroad brought coolness to outliers on the housetops, without threshing the lake to the disturbance of its voyageurs.The Fair God|Lew Wallace
The sudden uproar from within put the outliers on the qui vive, and consequently they were ready to receive us.
But the new province, like its new mother—or step-mother—country, had also its outliers of territory and people.
Just opposite, there are buttes, outliers of cliffs to the left.Canyons of the Colorado|J. W. Powell
They were only a sort of outliers in case something went wrong with those in the sure places.Labrador Days|Wilfred Thomason Grenfell
c.1600, "stone quarried and removed but left unused," from out + lie (v.2). Transferred meaning "outsider" is recorded from 1680s; "anything detached from its main body" is from 1849; geological sense is from 1833.