How to find out Standard Deviation

[madhubabum]

HI Experts

Here , i am having one pivot table with the following

Dim : Region,District,Client (Drill Down Group)

Exp : Label name : Order Hours Peer Average

         sum({<OrderType={'Others'},StandardFlag={1}, GroupName=, ClassName=, CategoryName=,   

                                                                                                                            ModelName=>}StandardHoursPer*OrderCount)

+

sum({<OrderType={'Others'},StandardFlag={0}, GroupName=, ClassName=, CategoryName=, ModelName=>}ActualHours)

How to find out Standard Deviation for "Order Hours Peer Average" expression?

Thanks

[tresB]

Have you tried stdev() ?