Published Online: 30 JAN 2010
Copyright © 2010 John Wiley & Sons, Inc. All rights reserved.
Corsini Encyclopedia of Psychology
How to Cite
Reichardt, C. S. 2010. Standard Deviation. Corsini Encyclopedia of Psychology. 1.
- Published Online: 30 JAN 2010
The standard deviation is a measure of the variability of a set of scores and is defined in relationship to the average of the scores. The average of a set of scores is called the mean. The standard deviation is a measure of how far the scores vary from their mean. If all the scores in a set of data are close to the mean, the standard deviation is small. If all the scores in a set of data are far away from the mean, the standard deviation is large.
- interquartile range