Divide Sum of value group by the unique count of the group

[aglpr]

Hello all,

Apologize for messy/confusing title.

I'm fairly new to Power BI and DAX thing, so I have a question about dividing a sum of the number from a group with the count number of the group itself.

I have 2 tables. Transactions Table (Trx Table) and a table from Google Analytics.

I have this sessions value of the source/medium from the GA table

Date	Source	Medium	Source/Mediun	Sessions
12 03 2022	google	cpc	googlecpc	6963
12 03 2022	facebook	cpc	facebookcpc	856

Which is 6963 for googlecpc sessions

and I want to divide it with the count transactions number of that group in the Transactions Table

Date	Source/Medium	Status
12 03 2022	googlecpc	Success
12 03 2022	googlecpc	Fail
12 03 2022	googlecpc	Success
12 03 2022	googlecpc	Fail
12 03 2022	googlecpc	Success

which in that table there are 5 transactions from googlecpc.

So, the calculations for the date 6 March will be 6963 divided by 5.

Anyone know how to create the DAX for this? I already tried to do research but still found no appropriate formula

Thank you!

[tackytechtom · Accepted solution]

Hi @aglpr ,

How about this:

I used this formular:

TomsDivideMeasure = 
DIVIDE ( 
    CALCULATE ( 
        SUM ( TableGA[Sessions] ) 
    ),
    CALCULATE (
        COUNTROWS ( TableTrx )
    )
) 

Does this get you closer to a solution? 🙂

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

[aglpr]

Hello Tom,

Thank you so much for the formula. Actually I mistype the expected calculations. It should be 5 divided by 6963, not 6963 divided by 5. But I change the order of the formula provided by you and it works! Keep forgotting how advanced the CALCULATION is

Thank you so much!