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# Excel auto sum not working on values calculated using formula.

I want to create a formula for SUM and AVERAGE that has a variable number of rows.

Here is the example where the 444 count varies from worksheet to worksheet.  I have saved this formula and easy enough to use but want to develop something similar but with many more columns.  Worth some time and effort as I evaluate the averages many times a week as they can change daily.

=SUM(V3:V444)/(SUM(CC3:CC444)+SUM(CD3:CD444))

4 Replies

Hi

# Re: Excel auto sum not working on values calculated using formula.

I will send the whole spreadsheet tomorrow and not sure what else I can say. It is a list of hundreds of home sales with 40 or so fields of information. I want to use the sums of 4 or 5 columns (fields) for averages between 2 or 3 fields at a time. For example-divide sum of one field by sum of another add three of those averages together and divide by the number of fields used.
Solution

# Re: Excel auto sum not working on values calculated using formula.

Instead of SUM(V3:V444) it could be something like

`=SUM(OFFSET(V3,0,0,COUNTA(V3:V10000)))`

etc

# Re: Excel auto sum not working on values calculated using formula.

Thank you so much.  I have each column working perfectly and just need to put it all together with correct number of parentheses.

Best,

Fred

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