Take average of a calculated measure.

[Anonymous]

So the measure i have attached is a measure that takes the average for the last 12 month. So e.g for  february it takes the last 12 month before and creates an average of that. This has worked fine so far. But now a new department is added (PIM). This department only has observation 3 month back, which will create a wrong average because its divded by 12. Instead i want it to be divided by 3, but the other departments should be an yearly average. Is this possible? 

[amitchandak · Accepted solution]

@Anonymous , Try a measure like given example

Rolling 12 Avg = divide( CALCULATE(sum(Sales[Sales]),DATESINPERIOD('Date'[Date ],MAX('Date'[Date]),-12,MONTH)) ,
CALCULATE(distinctCOUNT('Date'[Month Year]),DATESINPERIOD('Date'[Date],MAX('Date'[Date]),-12,MONTH), not(isblank((Sales[Sales])))))

not isblank is important to force count of available data