Calculating a weighted average in a pivot table
 

I have a data set that includes the IRR for each purchase my company has
made. I am wanting to calculate a weighted average IRR for the year
each purchase was made. I have tried writing a formula, however, the
results are not what I expect. This is the current formula I have
attempted...

= SUM('Net IRR' *amt_face )/SUM(amt_face )

The results are too high.

Thanks.


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mrogge
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Calculating a weighted average in a pivot table
 

Excel 2007
PivotTable, Table, GetPivotData, IRR
http://www.mediafire.com/file/0mj3klznnij/04_16_09.xlsx