A dataset that is 44% outliers

Abstract

The data illustrate outliers that are not mistakes and not observations that are unusually high or low. The reasons for them are all interesting historically. They illustrate that "outliers" need not be errors but may instead be particularly interesting cases. The data also illustrate that different data displays may differ in their ability to reveal interesting data structure. Copyright © 2005 by Robert W. Hayden, all rights reserved.