Learn how to count the number of unique and distinct values in a column based on data in another column using array in Microsof Excel.

Microsoft Excel is the go-to if you want to calculate a lot of data all at once, but even outside of basic math, you can use the app to find specific info.

When counting unique values in Microsoft Excel, use UNIQUE() as a helper function and avoid more complicated expressions.

Duplicates aren't bad, but you may need to know how many times a value is repeated or how many unique values are in a data range. Here's how to tackle these tasks in Excel.

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Learn how to calculate the net present value (NPV) of your investment projects using Excel's XNPV function.

Learn what present value (PV) and future value (FV) are and how to calculate present value in Excel given the future value, interest rate, and period.