priyanka.tayade

time weighted standard deviation

Discussion created by priyanka.tayade on Sep 9, 2011
Latest reply on Sep 12, 2011 by andreas

I am trying to calculate time weighted standard deviation on  PI data. I am using formula below.  My time weighted average result matches the PI summary average but not the standard deviation.

 

Is Pi using any different way for standard deviation calculations.

 

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