How to Extend Column Equations in Excel. Microsoft Excel spreadsheets frequently use similar formulas along columns. For example, you might need to keep a running total or tabulate a list of ...

Excel has SumIf and CountIf, but no AverageIf. However, with a little array magic, you can get Excel to average values, conditionally.

Populating a dropdown with a dynamic list is easy thanks to Microsoft Excel’s UNIQUE() dynamic array function.

In Excel, you can apply direct formatting to cells' values or backgrounds to make the spreadsheet easier to read. However, when an Excel formula returns a set of values—known as a spilled array ...