Add Total Average Column within Matrix

[1234567666]

Hi, I would like to add an Average Column at the end of this table. Could someone please help?

The rows are 1and2, column is New_Month and Value is Acctamt.

Some of the months do not have values for instance total average of the first row below should be -677.39(Total) / 3(number of month that have values)

 

[devanshi · Accepted solution]

AverageColumn =
IF( HASONEVALUE('Table'[New_Month]),
              IF( 'Table'[New_Month] IN {"1", "2"}, DIVIDE( SUM('Table'[Acctamt]),                                                                                         COUNTROWS(FILTER('Table', 'Table'[New_Month] IN {"1", "2"})) ),
                   BLANK() ),
BLANK() )