outlier

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outlier

[′au̇t‚lī·ər]
(geology)
A group of rocks separated from the main mass and surrounded by outcrops of older rocks.
(statistics)
In a set of data, a value so far removed from other values in the distribution that its presence cannot be attributed to the random combination of chance causes.

outlier

An entity outside the norm. Pronounced "out-liar," an outlier may refer to a person, organization or to data way outside the normal range. See anomaly detection.
References in periodicals archive ?
154), as was the main effect of percentage of outlying observations ([F.
To detect the outlying observations in fixed traits (X observations), method of Leverage values and Mahalanobies Distance have used whereas Studentized deleted residuals, Cook, s Distance and DFFITS statistical tests have applied for outlying in Y observations .
Outlying observations were not found in relation to the measured parameters and the distribution normality was not impaired.
The data analysed contained many outlying observations in terms of an unusual high value of standardised residual (13).
Preliminary inspection of these results indicated the possible existence of extreme outlying observations (Table S1 of the online Data Supplement).