Incorrect Total in Matrix - Trying to Produce Average in the Total

[auzzieb]

Thank you in advance for the help, so I have the below DAX measure that is technically producing the correct values for each month, however my total is incorrect. I want my total to produce the average of all the months in 2023 below. So the correct average would be $18.65 instead of $26.58 (per below screenshot). How can I change my measure to do this? I believe I need an AVERAGEX or a HASONEVALUE function, but not sure about the proper syntax. 

WTI - WCS Diff ($US/bbl) - Hardisty =

VAR LastDayWithPrice =

CALCULATE(

    LASTNONBLANKVALUE(Data[PriceDate], MAX(Data[PriceDate])),

    Data[symbol]="#DG.MO_INDEX.WCS_HRD/CURVE/M00")

VAR Price =

CALCULATE(

    [Average Close],

    Data[PriceDate]=LastDayWithPrice,

    Data[symbol]="#DG.MO_INDEX.WCS_HRD/CURVE/M00")

RETURN

ABS(Price)

Matrix Visual (total is incorrect, monthly values are correct). I want the total to be an average of the monthly values. 

Fields in Matrix:

[lbendlin]

You don't really need any code. Set the implicit aggregation of the WTI -WCS field to "average"  rather than "sum"

[auzzieb]

But this is a measure not a column. I can't just easily change the aggregation with the measure like I can with a column. 

[lbendlin]

In that case your approach is the way to go. Use HASONEVALUE to figure out where in the matrix you are, and adjust the computation accordingly.

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