Learn how GROUPBY passes both subset and full arrays into LAMBDA in Excel, letting you compute percent shares fast and explain results clearly.

Excel has several advanced sorting options, but most of us never venture beyond the ordinary alphabetic and numeric sorts. If you need more than a simple sort, check out Excel’s advanced sorting ...

Have you ever struggled with Excel formulas, trying to calculate running totals only to be left with errors and frustration? Many of us have faced the challenge of managing datasets where each row’s ...