Total Incorrect for weighted calculation - DAX help

[alexei7]

Hi everyone,

I'm struggling with DAX and hoping someone here can help.

My data is a table with a row for each sale, split by date and country.

I have another table which contains the number of staff working in each country and for each date.

I am trying to create a weighted calculation for # sales / staff.

See the table below with dummy data:

SalesDateMonth	# Raw Sales	Staff	Adjusted Sales
01/06/2019	4	2	2
01/07/2019	16	4	4
01/08/2019	21	4	5.25
01/09/2019	25	4	6.25
Total	66		25.55

It's quite easy to produce the above in DAX, the total is wrong - I tried:

Adjusted Sales = DIVIDE(COUNTROWS(Sales),AVERAGE(StaffWorking[Staff]))

Please can someone help me with the DAX.

The pbix model with dummy data is attached here:
https://mega.nz/#!rwNBTSSY!cK0EAKschH1tAcXspNRdF4rwCY9YoOXebyREhmXVamI

Thanks

[v-juanli-msft]

Hi @alexei7 

Create a measure

Measure = IF(ISINSCOPE(Sales[SalesDateMonth]),[Adjusted Sales],SUMX(ALLSELECTED(Sales),[Adjusted Sales]))

Best Regards
Maggie

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

[alexei7]

Hi Maggie,

Thanks very much for your help.

This does work in that specific visual, however I also want to use this metric in a matrix visual with the date.
Equally I noticed that the metric only worked when the slicer is being used, i want this to work all the time.

The below is the kind of chart where i want this metric to also work:

Let me know if you have any questions where I can clarify.

Thanks

Alex

[v-juanli-msft]

Hi  @alexei7 

Do you want to column total of matrix to show correct?

If so, create a measure

Measure 2 =
IF (
    ISINSCOPE ( Sheet1[date] ),
    [Measure],
    SUMX (
        FILTER ( ALLSELECTED ( Sheet1 ), Sheet1[country] = MAX ( Sheet1[country] ) ),
        [Measure]
    )
)

Best Regards
Maggie

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

[alexei7]

Hi Maggie,

Thanks for your time in looking into this.

I don't quite understand your solution, and it doesn't correlate to my example, so I can't translate it, or make it work.

e.g. my example has two connected tables

The pbix model with dummy data is attached here:
https://mega.nz/#!rwNBTSSY!cK0EAKschH1tAcXspNRdF4rwCY9YoOXebyREhmXVamI

[amitchandak]

I doubt Avg might not give the desired result

Try

Weight = DIVIDE(sum(Sales[Sales Amount]),LASTNONBLANK(StaffWorking[Staff],1))

[alexei7]

Hi @amitchandak ,

Thanks for looking at this. Yes, my formula with average is incorrect.

I tried your code (adjusting a little because i am looking for a count of sales, not the income) and unfortunately the total is not right - see screenshot.

The correct total should be 17.5 (the sum of the monthly weighted values).

Formula I used: Weight = DIVIDE(COUNTROWS(Sales),LASTNONBLANK(StaffWorking[Staff],1))

I found similar posts on the forum (e.g. https://community.powerbi.com/t5/Desktop/Weighted-average-incorrect-total/m-p/360009#M162425 ) but can't seem to work this out.

Thanks again for looking at this.

[amitchandak]

ok, You wanted the sum of weighted Avg in GT. That is tricky. Try something like this. I have not teseted this.

Column = sumx(Sales,DIVIDE(COUNTROWS(Sales),LASTNONBLANK(StaffWorking[Staff],1)))

You can also use Avg