topic Re: Fit straight lines to multiple plotted charts and display equation in Discussions

Fit straight lines to multiple plotted charts and display equation

Neo — Sun, 11 Jun 2023 11:18:41 GMT

I need to do a linear fit on my data plotted as multiple graphs similar to shown in the attached example. I am still learning JMP so do not know how to do linear fit on each plotted graph and display the equation on it. Any help is appreciated.

Re: Fit straight lines to multiple plotted charts and display equation

Mark_Bailey — Mon, 25 Oct 2021 18:32:35 GMT

Select Graph > Graph Builder.

Drag data column with response to the Y drop zone.

Drag data column with factor to the X drop zone.

Drag data column with Subsite to Group X drop zone.

Shift-click the regression element along the top.

Re: Fit straight lines to multiple plotted charts and display equation

Neo — Mon, 25 Oct 2021 20:22:53 GMT

@Mark_Bailey . Thanks, but I did not get the "Shift-click the regression element along the top". Where to find this option?

Re: Fit straight lines to multiple plotted charts and display equation

statman — Mon, 25 Oct 2021 21:03:26 GMT

There should be a set of "icons" across the top (see red arrow). If you select the 3rd icon, that puts a best fit line through the data. Then it opens up options. Check the box next to equation (other red arrow)