topic Re: How to let JMP give me a calculated (simplified) prediction equation (with coefficients calculated already)? in Discussions

How to let JMP give me a calculated (simplified) prediction equation (with coefficients calculated already)?

Leehappyjourney — Thu, 08 Jun 2023 21:08:26 GMT

When I do a full factorial DOE, and get my model (variables are E and M, y is response). When I let the model "show prediction expression", it gives me a equation like this: y=

This is a not finished equation, it need you to calculate and simplify it further. I don't know why JMP do this weird things like this since for a statistic software, to give a final simplified equation is not a difficult thing, and yet JMP let me to do those further calculation. Even in Minitab, I can get a simplified equation, like y=a*E+b*M+c*EM+d*M*M+e (a~d are coefficients, e is constant).

Does anybody know in JMP, how do you get the calculated (simplified) prediction expression?

Thank you very much!

Re: How to let JMP give me a calculated (simplified) prediction equation (with coefficients calculated already)?

Leehappyjourney — Sat, 12 Mar 2022 21:25:19 GMT

I attached the DOE JMP file here of my posted question.

Re: How to let JMP give me a calculated (simplified) prediction equation (with coefficients calculated already)?

txnelson — Sat, 12 Mar 2022 22:02:05 GMT

I believe this is what you want to do. If you take the prediction formula from the model and run it through the Simplify Expr() function

Simplify Expr( Expr( 50.5 + 6.25 * ((:E - 17) / 6) + -8.75 * (:M - 4) + ((:E - 17) / 6) * ((:M - 4) * -33.75) ) );

you get

(-314.708333333333) + 23.5416666666667 * :E + 86.875 * :M + -5.625 * :E * :M

Look in the Scripting Index for syntax and an example.

You can also go to the red triangle in the Formula Editor, and Select Simplify

Re: How to let JMP give me a calculated (simplified) prediction equation (with coefficients calculated already)?

Dan_Obermiller — Sun, 13 Mar 2022 20:17:48 GMT

Sorry. I misread the original response. You can ignore this message since I am unable to delete it.

Re: How to let JMP give me a calculated (simplified) prediction equation (with coefficients calculated already)?

Leehappyjourney — Mon, 14 Mar 2022 01:38:49 GMT

Thank you for your answer. But my JMP 15 didn't have the simplify choice when I right click (see below picture), and I don't know how to use to script by adding text orders to script. I don't know how to open the script editor, and I didn't find "how to open script editor" in the help as well. Could you please teach me how to open script editor and add the "Simplify Expr"

~~function to the script? Thank you!~~

Re: How to let JMP give me a calculated (simplified) prediction equation (with coefficients calculated already)?

Leehappyjourney — Mon, 14 Mar 2022 00:55:07 GMT

Sorry, I just figured out according to your answer after my last post. Please forget my last post.

Thank you for your help!