Hi,

You can use the cursor keys to cycle through the chart elements. More
explanation can be found here.
http://www.andypope.info/tips/tip003.htm

One you have the correct element selected use CTRL+1 to display the
format dialog. Or use the Format menu.

The chart toolbar include a dropdown list of chart elements which will
select the choosen item. To display the chart toolbar either right-click
a toolbar to display a popup of available toolbars or use the menu View
Toolbars Chart

Cheers
Andy

wrote:
Is there an alternate way to select a data series to format
in an XY Scatter chart?

The only way I know of is to move the cursor close to the
series line and right-click.

But if the chart includes many data series and the lines
are close together, it is difficult, if not "impossible", to
select the desired line.

I am looking for a method that presents me with a list
of all the data series, and I select the one I want to
"right click" (i.e. open the menu that include format,
add trendline and clear, among others).

Or something else that would not be so difficult to use.

--

Andy Pope, Microsoft MVP - Excel
http://www.andypope.info