Final answer:
The COUNTIFS function is a tool for counting data using multiple criteria sets in spreadsheets.
Step-by-step explanation:
The COUNTIFS function is a useful tool for counting data using multiple criteria sets in spreadsheets. It allows you to specify multiple conditions and counts the number of cells in a range that meet all of those conditions.
For example, if you have a dataset of students' scores and you want to count the number of students who scored above 90 in both math and science, you can use the COUNTIFS function to do that.
The syntax of the COUNTIFS function is:
=COUNTIFS(criteria_range1, criteria1, [criteria_range2, criteria2], ...)