Standard Deviation

[Anonymous]

Hi Guys,

I'm using the below expression in line chart. I need to calculate lower bound and upper bound using standard deviation(reference lines).

Num(Sum({<FileDate={"$(vMaxdate)"}>} FileSize)/Sum({<FileDate={"$(vMaxdate)"}>} RollingAvg),'#,##0%')

Please help me out. Attached my QVW file.

Thanks,

Siva.

[Anil_Babu_Samineni]

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