topic Pooled within-groups correlation matrix in Discussions

Pooled within-groups correlation matrix

Nickbuon1 — Fri, 09 Jun 2023 00:32:48 GMT

i am trying to locate where in JMP is the 'Pooled within-groups correlation matrix.'

I have looked at Multivariate and Discriminant analysis. I can see the correlations and the correlation probability output. But i am looking for the 'pooled' within group correlation.

Anywhere i can go in JMP?

Nick

Re: Pooled within-groups correlation matrix

Mark_Bailey — Wed, 28 Apr 2021 16:19:53 GMT

I do not recognize this term.

Re: Pooled within-groups correlation matrix

Nickbuon1 — Wed, 28 Apr 2021 18:03:53 GMT

here you go. I have attached some screen shots and my JMP data.

most of the JMP data does not really match up well. Some do or come close.

Re: Pooled within-groups correlation matrix

Mark_Bailey — Thu, 29 Apr 2021 12:59:37 GMT

I am afraid that the example of the results still does not explain to me what the pooled correlation matrix represents or how it is estimated. I am not an expert in MANOVA, so perhaps another community member with such expertise can help.

Re: Pooled within-groups correlation matrix

statman — Thu, 29 Apr 2021 18:54:47 GMT

Unfortunately, I'm with Mark. I don't understand what you want or why you want it.

Re: Pooled within-groups correlation matrix

Mark_Bailey — Thu, 29 Apr 2021 19:29:14 GMT

Actually, you had the result that you wanted. Use Analyze > Multivariate > Discriminant. Enter the 5 covariates as Y and the visit as X. The linear discriminant function will provide a table if you click the red triangle at the top and select Show Within Covariances. You get the table that was shown in your Word document.