The most used functions in Excel are the functions that count and sum. You can count and sum based on one criteria or multiple criteria.
Count
To count the number of cells that contain numbers, use the COUNT function.
Countif
To count cells based on one criteria (for example, higher than 9), use the following COUNTIF function.
Countifs
To count cells based on multiple criteria (for example, green and higher than 9), use the following COUNTIFS function.
Sum
To sum a range of cells, use the SUM function.
Sumif
To sum cells based on one criteria (for example, higher than 9), use the following SUMIF function (two arguments).
To sum cells based on one criteria (for example, green), use the following SUMIF function (three arguments, last argument is the range to sum).
Sumifs
To sum cells based on multiple criteria (for example, blue and green), use the following SUMIFS function (first argument is the range to sum).
General note: in a similar way, you can use the AVERAGEIF and AVERAGEIFS function to average cells based on one or multiple criteria.
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