Matrix subtotal

VoltesDev Matrix and table totals calculate the given measure in the context of ALLSELECTED essentially. They do not calculate a sum or an average per se. You need to build that into your measure. Often, using HASONEVALUE to determine if you are in a row or a total row, you then can use SUMX or AVERAGEX for the total.

Hi VoltesDev 

Use ISINSCOPE() to control subtotal logic

You can return
Normal value at row level
BLANK() at subtotal level (or custom logic)
Example
Measure=
IF(
ISINSCOPE(Dim[RowField]),
[Base Measure],
BLANK()
)

or

Custom Avg subtotal via DAX
If you want Avg at subtotal, Sum at rows
My Measure =
IF(
ISINSCOPE(Dim[RowField]),
[Value],
AVERAGEX(
VALUES(Dim[RowField]),
[Value]
)
)

This is average of visible rows, not raw data.

Please mark it as a solution with headup if this helps you. Thank You!