Multivariate Outliers

RODRIGUES, ISABEL; BOENTE, GRACIELA

International Encyclopedia of Statistical Science

SPRINGER

Lugar: Berlin; Año: 2011; p. 910 - 912

In the statistical analysis of data one often is confronted with observations that “appear to be inconsistent with the remainder of that set of data”(Barnett and Lewis, 1994). Although such observations (the outliers) have been subject of numerous investigations, there is no general accepted formal definition of utlyingness. Nevertheless, the outliers describe the abnormal data behaviour, i.e. data which are deviating from the natural data variability.