ATIS Telecom Glossary
Tuesday, October 21, 2014

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variance
In statistics, in a population of samples, the mean of the squares of the differences between the respective samples and their mean, expressed mathematically as: equation 49

where n is the number of samples, xi is the value of sample i, is the mean of the samples, and 2 is the variance. Note: The square root of the variance, , is the standard deviation.

 

 

 

 

 

 

 

 

 

 



 
These definitions were prepared by ATIS Committee PRQC
 
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