Standard Article

Average Deviation

  1. David C. Howell

Published Online: 15 OCT 2005

DOI: 10.1002/0470013192.bsa034

Encyclopedia of Statistics in Behavioral Science

Encyclopedia of Statistics in Behavioral Science

How to Cite

Howell, D. C. 2005. Average Deviation. Encyclopedia of Statistics in Behavioral Science. .

Author Information

  1. University of Vermont, Burlington, VT, USA

Publication History

  1. Published Online: 15 OCT 2005

Abstract

The average deviation is a measure of scale based on the average of the absolute deviations from the center of the distribution. For a normal distribution, the average deviation is somewhat less efficient than the standard deviation as a measure of scale, but this advantage quickly reverses for distributions with heavier tails.

Keywords:

  • dispersion;
  • efficiency;
  • estimation;
  • estimators;
  • scale;
  • variability