Видео с ютуба Sum Column Totals And Average Row Totals
Вычисление итогов путем суммирования видимых значений в DAX
Power BI Matrix Row Sum Totals Column Averages
Итоги Excel одним щелчком мыши
How to Sum a Column or Row of Excel Cells
MS access tutorial: How to Display column totals in a datasheet using a Totals row
How To Use Pivot Tables To Find Averages In The Total Row
DAX - Percent of Total vs Percent of Grand Total
Intermediate PowerBI - Calculating Average of Averages (AverageX)
Excel Pivot Table: How to Show Average instead of Grand Total