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Frequent Visitor

## Calculate Average value for same weekday all history

Hi All,

Hope you guys can help me with this one. I found several topics that had similar requests but none was close enough to help me figure it out.

So I have timestamped daily values for the past 2 years and I want to create a baseline activity so here's what I'm trying to do:

On each Monday, average out all previous Mondays

On each Tuesday, average out all previous Tuesdays

and so on...

What would be the DAX formula for such measure or calculated column?

Thanks a lot!

1 ACCEPTED SOLUTION
Super User

@fgenteur , better to have weekday column in date table or table

Weekday = weekday([Date])

they try a measure like
calculate(Average(Table[Value]), filter(Allselected('Date'), 'Date'[Weekday] =max('Date'[Weekday])))

or

calculate(Average(Table[Value]), filter(Allselected('Date'), weekday([Date]) =maxX('Date',weekday([Date]))))

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2 REPLIES 2
Frequent Visitor

Thanks! What about if I need to do the same per item like:

date1 | item1 | value

date2 | item1 | value

date1 | item2 | value

...

Super User

@fgenteur , better to have weekday column in date table or table

Weekday = weekday([Date])

they try a measure like
calculate(Average(Table[Value]), filter(Allselected('Date'), 'Date'[Weekday] =max('Date'[Weekday])))

or

calculate(Average(Table[Value]), filter(Allselected('Date'), weekday([Date]) =maxX('Date',weekday([Date]))))

Did I answer your question? Mark my post as a solution! Appreciate your Kudos!! !!
Dashboard of My Blogs !! Connect on Linkedin

Learn Power BI Beginners !! Advance Power BI Concepts !! Power BI For Tableau User !! Learn Power BI in Hindi !!
Proud to be a Super User!

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