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## DATEINPERIOD with AVERAGE or AVERAGEX Rounding Issue

Hello Power BI Community,

I am buiding a report that has a measure of weekly values that are derived by a few calculated measures which are derived by fixed column values.  Think dollar amounts calculated to generate O/S numbers and then the O/S numbers are used in a formula to come up with a 0.xxxxx value.

These values are displayed on a weekly basis for the entire quarter and then calculated on a BI-Weekly basis (so I dont think I can use the Average function in Power BI.  I can get to the exact numbers as displayed in Excel for the weekly numbers, however when I try to calculate the AVERAGE for the two weeks the numbers are slightly off, but it makes a material impact on output which is used for bonuses.  For example I have Values of:

Week 1:  0.21470

Week 2:  0.27147

The BI-Weekly number I am getting in Power BI is yielding 0.24161.  However, when doing a simple average I get 0.243085.  I've tried several formulas and get different answers, but never the right one.  Can you please help me with this.

Closest Formula (I noticed that changing the date period doesn't change the output):

Bi-Weekly:= If(ISODD([Week Number]), "-", CALCULATE(AVERAGEX(VALUES('Report Date'[Week Ending]), DIVIDE(DIVIDE([Phy Calc] + [Dmg Calc] + [Gl Calc],5)*100,100)),
DATESINPERIOD (
'Report Date'[Week Ending],
LASTDATE('Report Date'[Date]) ,
-14,
day
)) )

Employee

Hi @bigman24 ,

Please illustrate with sample data and show us the desired output.

Best regards,

Yuliana Gu

Community Support Team _ Yuliana Gu
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