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Variance

By Kardi Teknomo, PhD.

 

 

Variance is an average of square deviation from the arithmetic mean.

 

Other name: Average square deviation

Formula:

Example:

 

Special for only two positive numbers and , we have Variance

Example

, , then

 

See also: Variance and standard deviation, Average absolute deviation, Mean and Average

 

 

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This tutorial is copyrighted.

Preferable reference for this tutorial is

Teknomo, Kardi,Mean and Average. http:\\people.revoledu.com\kardi\ tutorial\BasicMath\Average\

 

 

 

 
© 2006 Kardi Teknomo. All Rights Reserved.
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