Published Online: 15 JUL 2005
Copyright © 2005 John Wiley & Sons, Ltd
Encyclopedia of Biostatistics
How to Cite
Gauvreau, K. 2005. Variance. Encyclopedia of Biostatistics. 8.
- Published Online: 15 JUL 2005
The variance of a random variable is the average value of the squared deviation from the mean. Its square root is the standard deviation. In a sample of size n, the corresponding sample measure usually has a divisor n − 1 rather than n.
- standard deviation;