How can I use the COUNTIFS function to identify distinct values in Excel sheets?

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To use the COUNTIFS function to identify distinct values in Excel sheets, follow these steps:

1. Select the cell where you want to display the result.
2. Type the formula =COUNTIFS(range1, criteria1, range2, criteria2, ...) where "range1, criteria1" corresponds to the first range you want to count distinct values from and the criterion you want to use for that range. You can add additional ranges and criteria as needed.
3. Press Enter to apply the formula to the selected cell.
4. The result will be the number of distinct values that meet the specified criteria across all the ranges.

For example, let's say you have a list of customer names in column A, and you want to count the number of distinct customers who have purchased a product in January:

=COUNTIFS(A:A, "<>duplicate", B:B, "January")

In this formula, "<>duplicate" is used to exclude any duplicate values in column A, and "January" is the criterion for the values in column B. The formula will count the number of distinct customers who have purchased a product in January.