weighted average for groups

[viitama]

Hi, I have simple calculation, that I thought would work with filtering, but I can't get it to work. My data:

Table1

I thought that my formula for result fieldwould work when slicing with groups but it doesn't.

Result = (Table1[Value] / sum(Table1[Value]) * Table1[X])

Correct results calculated with excel are -13.333 for group A and -35.5556 for group B. I assume that my sum functions doesn't work in filtering but how do I write this that weight part is only calculated for grouped part?

[v-yulgu-msft · Accepted solution]

Hi @viitama,

Please try this measure:

Result =
SUMX (
    Table1,
    CALCULATE (
        MAX ( Table1[Value] )
            / CALCULATE ( SUM ( Table1[Value] ), ALLEXCEPT ( Table1, Table1[Group] ) )
            * MAX ( Table1[X] )
    )
)

Best regards,

Yuliana Gu