Filter and Sum Values

[Mahadevaraobc]

Hi, Iam new to Power BI DAX and have few issues which might be easy..Not sure to use measure or column please help

I have a dataset which has Month Column (ColumnA) and some values in different column (ColumnB)

1) I want to sum values in ColumnB related only to particular month and count no of rows in ColumnA and divide ColumnB sum by ColumnA rowcount.

[Greg_Deckler]

Something like this should work:

Measure = 
VAR __sum = SUM([Column1])
VAR __count = COUNTX('Table2',[Month])
RETURN
DIVIDE(__sum,__count,0)

See Page 4, Table2 of attached.