SUM is the spreadsheet equivalent of an open invite: it welcomes everything into the total, whether it belongs there or not.

The syntax for counting the number of unique values from a list of a column using the array formula is as follows: =SUM(IF(COUNTIF(<first cell from which you count the number of unique values>:<last ...

Placing spreadsheet data into a table quickly formats it and makes it easy to work with and analyze. Here’s how to use this basic yet powerful Excel tool. Tables are one of the fundamental tools in ...