Palisade Knowledge Base

HomeTechniques and TipsStatToolsBox and Whisker Outliers

17.14. Box and Whisker Outliers

Applies to: StatTools 6.x/7.x/8.x

The Whiskers and the outliers are determined by the Interquartile Range (IQR). This is the 3rd Quartile - 1st Quartile.

Whiskers extend to the further observations that are no more than 1.5 IQR from the edges of the box. Mild outliers are observations between 1.5 IQR and 3 IQR. Extreme outliers are greater than 3 IQR from the edges of the box.

Last edited: 2020-12-03

This page was: Helpful | Not Helpful