How to get last 12 month moving average?

[sonya7]

I have Amount data based on 

Startdate date. How can I write the 12-month average?

[v-yangliu-msft · Accepted solution]

Hi  @sonya7 ,

I created some data:

Here are the steps you can follow：

1. Create measure.

Date_Measure =
var _date=DATE(YEAR(MAX('Table'[Date]))-1,MONTH(MAX('Table'[Date])),DAY(MAX('Table'[Date])))
return
AVERAGEX(FILTER(ALL('Table'),
'Table'[Date]>=_date&&'Table'[Date]<=MAX('Table'[Date])),[Amount])

Month_Measure =
var _dateEND=
EOMONTH(MAX('Table'[Date]),0)
var _dateEND2=
EOMONTH(MAX('Table'[Date]),-12)
var _datestart=
DATE(
    YEAR(_dateEND2),MONTH(_dateEND2),1)
return
AVERAGEX(FILTER(ALL('Table'),'Table'[Date]>=_datestart&&'Table'[Date]<=_dateEND),[Amount])

2. Result:

Best Regards,

Liu Yang

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly

[amitchandak]

@sonya7 , Try a measure like

12 Month Avg = CALCULATE(AverageX(Values('Date'[MONTH Year]),calculate(Sum('Table'[Value)))
,DATESINPERIOD('Date'[Date ],MAX('Date'[Date ]),-12,MONTH))

[sonya7]

It is correct in total but returns incorrect results on a monthly basis(brings itself) .Can you be more specific for the date field?