Outlier

From Citizendium, the Citizens' Compendium
Jump to: navigation, search
This article is a stub and thus not approved.
Main Article
Talk
Related Articles  [?]
Bibliography  [?]
External Links  [?]
Citable Version  [?]
 
This editable Main Article is under development and not meant to be cited; by editing it you can help to improve it towards a future approved, citable version. These unapproved articles are subject to a disclaimer.

In statistics, an outlier is an observation in a data set that is so different from the other observations that it appears not to belong in the data set.

The most common treatment of outliers is to exclude them from statistical calculations.

The reasoning behind this is that the outliers must have been generated by a different phenomenon from the rest of the observations, for example an error in measurement, and would therefore make statistical analysis less accurate.

References