Incorrect Avg

[rgadbois]

Hi,

I am attempting to calculate an measure for an average based on 2 criteria within separate columns. I want to filter by position, and by day code as seen below. I want to filter by position "D" and day code "Game". The result I expect is 340, which is also the average shown in PowerQuery when filtering rows by these 2 criteria, though the measure I am using shows "345". Any assistance with this would be great. Thank you!

Note - I have tried numerous iterations of CALCULATE, with these 2 filters, COUNTROWS, and similar functions but all produce the exact same result, which is incorrect. Any additional insight into how DAX is calculating this average, whereas PowerQuery shows the value I expect being different from the calculation, it would be greatly appreciated!

_Forwards Game PL =

CALCULATE(AVERAGE(

    Catapult[PL]),

    FILTER(ALL(Catapult),Catapult[Day Code] = "Game" && Catapult[Position Name] = "F"

    )

 )

Position	PL	Day Code
D	310	Game
D	313	Game
D	326	Game
D	403	Game
D	332	Game
D	382	Game
D	332	Game
D	370	Game
D	367	Game
D	348	Game
D	321	Game
D	394	Game
D	329	Game
D	325	Game
D	327	Game
D	294	Game
D	339	Game
D	341	Game
D	315	Game
D	300	Game
D	375	Game
D	229	Game
D	357	Game
D	319	Game
D	375	Game
D	326	Game
D	421	Game
D	340	Game

EDIT: I have also just tried the average for the entire column without any filters and get an incorrect value. Why does PowerBI do this??? This is extremly frustrating as I am beginning to question data integrity from PowerBi. Thank you!

[tackytechtom · Accepted solution]

Hi @rgadbois ,

I used your measure as posted in your question. Note, I changed Position from "F" to "D" because "D" was the only value that you provided in your sample data:

As you can see, I get the 340. Could it be that you just used the wrong letter? Otherwise, I think your DAX looks good 🙂 Here another way of writing it:

_Forwards Game PL = 
CALCULATE ( AVERAGE ( tabell[PL] ), tabell[Day Code] = "Game" && tabell[Position] = "D" )

Hope this helps!

/Tom
https://www.tackytech.blog/
https://www.instagram.com/tackytechtom/

[rgadbois]

Thank you! I knew I wasn't crazy. Sorry for the error on that letter, I am doing this for both forwards and defensemen. I had ensured I entered the correct letter in PowerBI for this instance as well. I also just tried taking the average for the entire column with no filters and saw that it was also incorrect. Any possible insight as to why this may be the case?

NOTE - I do get the correct value on a blank page.... but when I add this measure as a card on a page with visuals, but NO page filters, the value is incorrect.