I have a workbook, in Excel 2007, that has many sheets. I usually add 4 to 5 sheets per week to this workbook. I want to get a calculate a running grand average of the averages from each sheet. The cell number is always the same on each sheet for the average. I know I could do a formula =(Sheet2!A46+nextsheet+….)\number of data points. This would have to be updated daily doing it this way. Is there any easier way?
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