Chris -

You can split the data into two series, and use a different symbol for
significant points. This web page has instructions:

http://peltiertech.com/Excel/Charts/...nalChart1.html

- Jon
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Jon Peltier, Microsoft Excel MVP
Peltier Technical Services
Tutorials and Custom Solutions
http://PeltierTech.com/
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Chris Russell wrote:

I have Excel 2003 and want to mark specific data points on a line chart as
statistically significant with some kind of symbol (*). I cannot for the
life of me figure out how to do this, or maybe it is not possible. Thanks
for the help in advance.