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

Microsoft Excel's new dynamic array functions make complex calculations easier than ever before.

INDEX with XMATCH returns an item from a range or array according to the first or last match it finds. Like XLOOKUP, it works with vertical and horizontal datasets, can search in any direction, and ...

Before LAMBDA was introduced to Excel, you'd need to know how to use VBA or macros to create your own function. However, today, Excel's LAMBDA tool lets you do this using familiar Excel language ...