Master the COUNTIFS Function for Complex Data Analysis Counting cells that meet one condition is easy with COUNTIF. But what happens when you need to count sales that were “Completed” **AND** were for “Product X”? That’s where the mighty COUNTIFS function comes in. It is essential for advanced data filtering and reporting. Understanding the COUNTIFS Syntax (The AND Logic) The COUNTIFS function allows you to apply multiple criteria to multiple ranges, and a row is only counted if ALL the specified conditions are met. This is known as AND logic . The Basic Syntax: =COUNTIFS(criteria_range1, criteria1, [criteria_range2, criteria2], ...) criteria_range1 (Required): The first range to evaluate. criteria1 (Required): The condition that must be met in criteria_range1 . criteria_range2, criteria2 (Optional): The second range and its corresponding condition. You can include up to 127 pairs! Exa...