In the chart, use the chart menu/ Add Trendline.
--
David Biddulph

"Tim" wrote in message
...
I've tried everything I can think of. This is actually quite simple in
Sigma
Plot and Cricket Graph but I can't seem to find a way to do this in Excel.
Could someone please direct me in how to add a simple regression line to
an
existing XY scatter plot?

Thank you.