Tuesday, September 04, 2007

Adding an Average Line to a Chart Using Defined Names

Please Note: This technique appears not to work in Excel 2007 (SP 1). For some reason, not explained by Microsoft as far as I can tell, some (but not all) named ranges are no longer allowed in the Series() function. This appears to be yet another problem with the new charting engine. So, this post only applies to Excel 2003 and earlier versions.

I was perusing Yahoo! Answers looking for interesting questions and I ran across one that asked how you can add an line that represents the average of a data series to a chart of that series. The most obvious way to do this would be to use a

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