Calculating Dynamic Average Across Unlimited Rows and Columns in Google Sheets

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1 
I'm trying to figure out the best way to calculate the average for each row in my Google Sheets. The tricky part is that I don't know how many rows or columns I'll have. It could be a lot!

Here's what my sheet looks like:

Col A | Col B | Col C | Col D | Col E | ...
------|-------|-------|-------|-------|-----
Data 1|       |   3   |   7   |   2   | ...
Data 2|       |   9   |   1   |       | ...
      |       |   5   |       |   8   | ...
Data 3|       |   2   |   4   |   6   | ...

I want to put the average in Column B for each row that has data. But the number of columns with data might change. Also, there might be empty cells mixed in.

What's the smartest way to do this? Is there a formula that can handle this without me having to update it all the time?

Thanks for any help!
2

I have encountered a similar challenge when working with dynamic data sets in Google Sheets. In one of my past projects, I used an array formula that adapts automatically to rows with varying numbers of columns. For instance, try placing this formula in cell B1:

=ARRAYFORMULA(IF(LEN(A1:A), AVERAGE(FILTER(C1:1, NOT(ISBLANK(C1:1)))), ))

This approach ensures the formula only calculates averages for rows where there is data in column A and it filters out empty cells. The result is a dynamic, self-adjusting solution that updates as you modify your data. Adjust the cell range if your data configuration changes. I hope this proves useful.

3

Having worked extensively with dynamic data in Google Sheets, I can offer a robust solution. Consider using this formula in cell B2:

=ARRAYFORMULA(IF(A2:A<>“”, AVERAGEIF(C2:2&“”, “<>”, C2:2), “”))

This formula calculates the average for each row, ignoring blank cells. It’s designed to automatically adjust to any number of columns, making it ideal for your situation where data extent is variable. The formula only populates cells in column B where there’s corresponding data in column A, maintaining a clean sheet appearance.

I’ve implemented this in projects with fluctuating data inputs, and it’s proven to be both efficient and low-maintenance. Remember to adjust the starting row number if your headers are in a different position.

4

hey RunningTiger, i’ve got a neat trick for ya. try this in B2:

=ArrayFormula(IF(A2:A<>“”,AVERAGE(FILTER(C2:2,C2:2<>“”)),“”))

it’ll handle empty cells n update automatically when u add more data. No need to mess with it later. lemme know if u need help!