Add a trend line to multiple... Solved

Question

Hello,  I would like to add a trend line to a scatter plot. I have several series (6), and I want to have a single trend line that takes into account my 6 series.  Thank you for your time.

Beton · Accepted Answer

Ah, I found it!

I added a series with all my data points, then I selected the option to make my points on this series invisible. I then created a trendline based on this series that contains all my data points.

Thanks, you put me on the right track ;)

Raymond PENTIER · Answer

No!
It wouldn't be a trend line anymore, in that case...
You need to add an additional series with the average of the 6 ordinates.
--
It's nice, retirement! Especially in the Caribbean... :-)
☻ Raymond ♂

Beton · Answer

In fact, at the beginning I had only one series and I created my trend line, but I wanted different colors according to a third parameter. So I have 6 colors with my 6 series of points (the same points as at the beginning). And I would like all of my points to be taken into account to get the same trend line as when I had a single series.

Add a trend line to multiple...

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