Excel - Calculation on excel sheet

Ask a question


I used "=AVERAGE(B2:AR2)" to calculate percentages based on information from 40 sheets. Example, On one sheet that compiles the data from 40 sheets will have cells with 100%, 0%, 80%, 0% etc..(Usually the 0% indicates no activity in the cells and Excel does not count the zeros). The Average formula seems to work like I want it. However, there are occasions where I do want Excel to include zero percent. When I manually type the zero in the cell on one of my sheets, my chart reflects the correct calculation but of course I delete the formula.


At first I didnt understand, but then I did some of my own example and see what you mean. I used three formulas with differeing results when the 0% is deleted and left with a blank.
I started with AVERAGE(B2:AR2) and tested it against SUM(B2:AR2)/COUNTA(B2:AR2): which is just the average formula in its mathimatical simplest. sum of the numbers divided by sum of the number of data points. I thought that the counta would count the blank, but as i should have known it only counts if there is something in the cell. So this however gave me the same result when the 0%s were omitted.

I then did the same thing, but to count the data points, as I assume you have data in each cell from B2-AR2, I used a more complicated way to count. I did:


This worked when 0%s were omitted since it wasn't counting anything but the column reference numbers which are absolute. the +1 is included in the end because the number is inclusive.

(obviously format the cell as a Percent to get the %)
Jean-François Pillou

CCM is a leading international tech website. Our content is written in collaboration with IT experts, under the direction of Jeff Pillou, founder of CCM.net. CCM reaches more than 50 million unique visitors per month and is available in 11 languages.

Learn more about the CCM team