Note the left side of the range reference is locked ($B$5) and the right side is relative (B5). This is called a "mixed reference", since it contains both absolute and relative addresses, and it creates an expanding range.
As the formula is copied, the first cell in the reference is locked, but the second reference expands to include each new row. On each row, COUNTIF counts cells in the range that are equal to "blue", and the result is a running count.
The outer layer of the formula uses the IF function to control when COUNTIF fires. COUNTIF only generated a count when the value in B is "blue". If not, IF returns an empty string ("").
Running count of every value
To create a running count of every value that appears in column A, you can use a generic version of the formula like this:
To count cells that contain certain text, you can use the COUNTIF function with a wildcard . In the example shown, the formula in E5 is: = COUNTIF ( B5:B15 , "*a*" ) How this formula works The COUNTIF function counts cells in a range that...
To calculate a running total, or cumulative sum, you can use the SUM formula with a mixed reference that creates an expanding range. In the example shown, the formula in cell D6 is: = SUM ( $C$6:C6 ) When this formula is copied down the column, it...
COUNTIF is an Excel function to count cells in a range that meet a single condition. COUNTIF can be used to count cells that contain dates, numbers, and text. The criteria used in COUNTIF supports logical...
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