Standar deviation across sheets help

I

ibressler

I have written a formula that will take what is written in Column A o
my Cover sheet and match it to Column A of all the other worksheet
(other worksheets defined as "CMM_Dates") which will in turn take th
Column E values of all the CMM_Dates worksheets (with a match in Colum
A) and average them.

=SUMPRODUCT(SUMIF(INDIRECT("'"&CMM_Dates&"'!$A:$A"), $A2
INDIRECT("'"&CMM_Dates&"'!$E:$E"))) / (COUNTIF(CMM_Dates,"*"))

MY QUESTION:

Can I take this Equation, and instead of averaging the values taken fro
Column E of the CMM_Dates Worksheets, can you help me ReWrite th
formula to take a Stand Deviation of the values taken from Column E o
the CMM_Dates Worksheets?

Any help would be greatly appreciated

Thank you
 

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