Published Online: 15 OCT 2005
Copyright © 2005 John Wiley & Sons, Ltd
Encyclopedia of Statistics in Behavioral Science
How to Cite
Howell, D. C. 2005. Average Deviation. Encyclopedia of Statistics in Behavioral Science. .
- Published Online: 15 OCT 2005
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.