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maxfefer
Regular Visitor

Help with rolling average

Hello,

 

I am having issues calculating a moving average. I think there may be something wrong with my Date column? When I try to calculate a 7 day rolling average in a new column "RollAvg1" with the DAX code from the Quick Measure, the result is only averaging one row (one day), not the full 7 day window I want. I've tried removing the .[Date] suffix and it still did not work. It looks like the Time Intelligence is working within PowerBI because the automatic date table is generating, but the Date is greyed out.

 

Can you help?

Thanks!

 

RollAvg1 = 
VAR __LAST_DATE =
    LASTDATE ( Query1[Date].[Date] )
RETURN
    AVERAGEX (
        DATESBETWEEN (
            Query1[Date].[Date],
            DATEADD ( __LAST_DATE, -6, DAY ),
            __LAST_DATE
        ),
        CALCULATE ( SUM ( Query1[Values] ) )
    )

 

Capture.PNGCapture1.PNG

 

4 REPLIES 4
amitchandak
Super User
Super User

@maxfefer , I typically used this kind of formula with date calendar

 

Rolling 7 day = CALCULATE(sum(Sales[Sales Amount]),DATESINPERIOD('Date'[Date],MAX(Sales[Sales Date]),-7,Day))

 

 

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Thank you, @amitchandak. The equation you provided blank results in my column. I also tried including the .[Date] suffix and it still resulted in blank results.

Capture2.PNG

Hi @maxfefer

 

Try below calculated column:

 

RollAvg1 = 
    AVERAGEX (Filter('Query1',Query1[Date]<=earlier(Query1[Date])&&Query1[Date]>=earlier(Query1[Date])-6),
       
        CALCULATE ( SUM ( Query1[Values] ) )
    )

 

 

Best Regards,
Kelly
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Thanks Kelly. This also didn't work since there is a circular logic error, probably from referencing Query1[Date] twice in the boolean. Is there a way to elevate this to Microsoft staff?

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