topic How do I fit a normal 4 mixture to a distribution? in Discussions

How do I fit a normal 4 mixture to a distribution?

REW — Tue, 31 Oct 2023 17:23:54 GMT

I frequently deal with multimodal distributions in my data. Usually they are straightforward normal 2 or 3 mixtures, but occasionally I have more modes. It must be possible to fit more than 3 normal mixtures. I have an example from some older work where JMP has produced exactly the kind of normal 4 mixture that I now need to do. I'm attaching this example. I'm using JMP Pro 17.0.0 - can anyone point me to how I can generate the kind of normal 4 fit that you see in the attached example?

Re: How do I fit a normal 4 mixture to a distribution?

jthi — Tue, 31 Oct 2023 05:28:28 GMT

Not sure if there are other places where you can do this, but enable legacy fitters

and then you get new menu where you can use Normal Mixture Other

Re: How do I fit a normal 4 mixture to a distribution?

Mark_Bailey — Tue, 31 Oct 2023 13:23:17 GMT

You could use Life Distribution for this purpose.

Re: How do I fit a normal 4 mixture to a distribution?

REW — Tue, 31 Oct 2023 14:59:42 GMT

Thanks! This works perfectly. Wonder why JMP makes this so hard to find and doesn't seem to have it in their documentation. However, you have gotten me to the right place, so thanks again.

Re: How do I fit a normal 4 mixture to a distribution?

REW — Tue, 31 Oct 2023 15:01:36 GMT

The reply by jthi above is exactly the solution. Thanks.