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:
The COUNTIF function counts cells in a range that meet criteria. For example, to count the number of cells in a range that contain "a" you can use: = COUNTIF ( range , "a" ) // exact match However, note this is an exact match. In order to...
This formula uses what is called a " mixed reference " to create an "expanding range". A mixed reference is a reference that includes both absolute and relative parts. In this case, the SUM formula refers to the range C6:C6. However, the first...
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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