Q4469 Formula used for standard deviation calculation in TableMath function

ArticleID: Q4469
Created: 22/09/2006
Last Updated: 23/11/2007
Suggested By: Kelvin Proctor

Applies To:

CitectSCADA 3.xx, 4.xx, 5.xx, 6.xx CitectHMI 3.xx, 4.xx, 5.xx, 6.xx

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Summary:

What is the formula used in the TableMath cicode function to calculate standard deviation?

Solution:

The standard formula for the calculation of standard deviation is: For the purpose of efficient implementation the TableMath function implements the following formula that is mathematically equivalent:

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Keywords:

TableMath cicode array standard deviation