Dear All, I need a help about prediction from polynomial degree equations. I have a jmp file at the attachment. ı am interesting result change with time(day). Additionally ı want to predict what time Result is equal to 22. For that purpose ı use Analyse ---> Fit Y by X Y, Response: Result X, Factor: Time(day) Then from red triangle I select Fit,polynomial --> 3,cubic. The below equation is obtained; Result = 13,063024 + 1,1850185*Time(day) - 0,3382576*(Time(day)-5,5)^2 + 0,0272922*(Time(day)-5,5)^3 I want to predict what time(day) result will be equal to 22. How can I use the above equation. Is there anyone can help for this. You can see at the attached jmp file.
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