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Regular Visitor

## Moving Average

Hey,

I tried to go for the Moving Average building with PowerBI.

The problem is that the moving average is calculated for the future, which does not make any sense.

I wanted to do a six-month-rolling average with the quick measure (problem of above appeared), then with the formula = calculate(average([Sales]), DatesInPeriod([date];Lastdate([date]), -6, MONTH). Same Problem, again. So I do not know what is the problem. Perhaps somebody could offer me a simple sample PBIX data with a 6 month moving average over 2 years data..

1 ACCEPTED SOLUTION
Employee

Hi @Rotergnom2,

I would suggest you create a date table in your scenario. Please check out the attached demo and the measure below.

```Measure =
VAR maxFactDate =
CALCULATE ( MAX ( FactTable[Date] ), ALL ( 'Calendar' ) )
RETURN
IF (
MAX ( 'Calendar'[Date] ) > maxFactDate,
BLANK (),
CALCULATE (
AVERAGEX (
SUMMARIZE (
'FactTable',
'Calendar'[Date].[Year],
'Calendar'[Date].[Month],
"MonthTotal", SUM ( FactTable[Sales] )
),
[MonthTotal]
),
DATESINPERIOD ( 'Calendar'[date], LASTDATE ( 'Calendar'[date] ), -6, MONTH )
)
)
```

Best Regards,

Dale

Community Support Team _ Dale
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
3 REPLIES 3
Employee

Hi @Rotergnom2,

Best Regards,

Dale

Community Support Team _ Dale
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Employee

Hi @Rotergnom2,

I would suggest you create a date table in your scenario. Please check out the attached demo and the measure below.

```Measure =
VAR maxFactDate =
CALCULATE ( MAX ( FactTable[Date] ), ALL ( 'Calendar' ) )
RETURN
IF (
MAX ( 'Calendar'[Date] ) > maxFactDate,
BLANK (),
CALCULATE (
AVERAGEX (
SUMMARIZE (
'FactTable',
'Calendar'[Date].[Year],
'Calendar'[Date].[Month],
"MonthTotal", SUM ( FactTable[Sales] )
),
[MonthTotal]
),
DATESINPERIOD ( 'Calendar'[date], LASTDATE ( 'Calendar'[date] ), -6, MONTH )
)
)
```

Best Regards,

Dale

Community Support Team _ Dale
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Super User

So, is your calculation correct other than the fact that it includes future estimations?

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