Forum Discussion
7 day moving average
I really have zero DAX experience. I even tried to add a column and then enter an Excel formula at first. Of course after digging in a little I realized that it doesn't work that way in this case. I am using direct query from a SQL database.
My query data looks like the below table - and I am trying to add the final 7 day moving average column. In short, I need to sum the quantity ordered on each date and then calculate the 7 day moving average on those sums. I would then add that data to the line graph below.
What is the best way to go about doing this? In addiiton, is there a particular trainng course I can take to come up to speed?
4 Replies
Hi Anonymous ,
Try using this:
TotalSales = Sum(Sales)
Avg Sales (MA 7 days) =
//Selecting the date in the range
VAR _LastDate =
MAX(Calendar[Date] )VAR _Duration = 7 //Defining the duration to be considered for average calculation(k)
//For filtering the Calendar Table for the defined range
VAR_CalculationPeriod =
FILTER(
ALL(Calendar ),
AND(Calendar[Date] > _LastDate — _Duration, — the range start date
Calendar[Date] <= _LastDate — the range end date
)
)
VAR _MovingAverage =
IF (COUNTROWS ( _CalculationPeriod ) >= _Duration,
CALCULATE(AVERAGEX(Calendar,[TotalSales]), _CalculationPeriod))
RETURN
_MovingAverageAnonymous -> Please hit the thumbs up & mark it as a solution if it works for you. Thank you.
