Measure - moving/rolling average

Hi,

Please check the below picture and the attached pbix file.

INDEX function (DAX) - DAX | Microsoft Learn

WINDOW function (DAX) - DAX | Microsoft Learn

2 rows moving avg DupResult: =
VAR _previousrow =
    MAXX (
        OFFSET (
            -1,
            ALL ( data ),
            ORDERBY ( data[rowid], ASC ),
            ,
            ,
            MATCHBY ( data[rowid] )
        ),
        data[rowid]
    )
VAR _t =
    WINDOW (
        -1,
        REL,
        0,
        REL,
        ALL ( data ),
        ORDERBY ( data[rowid], ASC ),
        ,
        ,
        MATCHBY ( data[rowid] )
    )
RETURN
    IF (
        _previousrow <> BLANK ()
            && HASONEVALUE ( data[rowid] ),
        AVERAGEX ( _t, data[DupResult] )
    )