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ChernoffTurtle7
Level III

Why can't use 'Fit Logistic 4P Rodbard' ?

hi, why does the option 'Fit Logistic 4P Rodbard' gray out in my JMP(16.1.0)? Anyone know the reason?Thanks!

ChernoffTurtle7_0-1704939797607.png

 

1 ACCEPTED SOLUTION

Accepted Solutions

Re: Why can't use 'Fit Logistic 4P Rodbard' ?

That model is disallowed when you have a dose equal to zero. Here is the result if that level is excluded and hidden:

dose.JPG

Some analysts use log dose, which is missing for dose equal to zero. This model is available in this case, too:

log dose.JPG

View solution in original post

2 REPLIES 2

Re: Why can't use 'Fit Logistic 4P Rodbard' ?

That model is disallowed when you have a dose equal to zero. Here is the result if that level is excluded and hidden:

dose.JPG

Some analysts use log dose, which is missing for dose equal to zero. This model is available in this case, too:

log dose.JPG

ChernoffTurtle7
Level III

Re: Why can't use 'Fit Logistic 4P Rodbard' ?

thank you very much!