Grab 3 cells to left of the cell I need to average without updating references

**shane01101** · 01-07-2014, 05:13 PM

Hi All,

I am looking for a formula that will do the following example....

Columns A, B, C contain last 3 months of data. Column D contains the Average of last 3 months using Average() formula. Now its a month later and I add a new column to column D with current month data so now I have B, C, D have the last 3 months data and column E has the Average of last 3 months. How can I have a formula that automatically grabs data 3 cells to the left where I don't have to automatically update the cell references every time I insert a new month?

**p24leclerc** · 01-07-2014, 08:45 PM

try this formmula:

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Change the cell reference E2 to the cell where you want your average formula.
when you'll insert a column in front of the average, it will always count the last 3 month.

**shane01101** · 01-12-2014, 03:29 AM

This is just what I was looking for, thank you!

**arlu1201** · 01-13-2014, 10:33 AM

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