When I scatter plot a set of data with negative x values and add a trend
line, the trend line extends to x=0, when I would expect it to just cover the
data range.

eg
-2.3 1
-2.4 0
-2.7 -1
-3 -4

This is without the extending the trendline using the forecast options.

if I plot positve x values the bug does not happen

eg
2.3 -4
2.4 -1
2.7 -2
3 3

I am using Excel 2007 (12.0.6331.5000)

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mrarx -

When I scatter plot a set of data with negative x values and add a trend
line, the trend line extends to x=0 <

Yes, this behavior in Excel 2007 is unexpected and is different from
previous versions of Excel. I agree that it is an "undesirable feature,"
i.e., a bug.

- Mike Middleton
http://www.MikeMiddleton.com
Software and Books for Decision Analysis and Data Analysis



"mrarx" wrote in message
...
When I scatter plot a set of data with negative x values and add a trend
line, the trend line extends to x=0, when I would expect it to just cover
the
data range.

eg
-2.3 1
-2.4 0
-2.7 -1
-3 -4

This is without the extending the trendline using the forecast options.

if I plot positve x values the bug does not happen

eg
2.3 -4
2.4 -1
2.7 -2
3 3

I am using Excel 2007 (12.0.6331.5000)

----------------
This post is a suggestion for Microsoft, and Microsoft responds to the
suggestions with the most votes. To vote for this suggestion, click the "I
Agree" button in the message pane. If you do not see the button, follow
this
link to open the suggestion in the Microsoft Web-based Newsreader and then
click "I Agree" in the message pane.

http://www.microsoft.com/office/comm...excel.charting