What Is Excel? Excel is a spreadsheet program developed by Microsoft that allows users to analyze, calculate, format, and organize data in a spreadsheet, a grid-like format of rows and columns.

To activate Power Pivot, go to File > Options, click Add-ins, select COM Add-ins from the dropdown, and check the box for ...

Select the columns you want to fix. In this case we’re selecting the header columns — those at the very top of the ...