Re: IBM Support page on the point-biserial correlation

Posted by Bruce Weaver on Nov 22, 2022; 11:15pm
URL: http://spssx-discussion.165.s1.nabble.com/IBM-Support-page-on-the-point-biserial-correlation-tp5741086p5741094.html

Here is one possible translation of the first sentence below:  Jon found my !rhoCI macro very clunky, and decided he had to produce a better mousetrap.  (https://www.tqmp.org/RegularArticles/vol10-1/p029/index.html)

Just kidding Jon.  But it was very kind of you to acknowledge me in the help for STATS CORRELATION, as I do not recall making any very substantial contributions.  

Yes, bootstrapping the CI is an option.  But my preference would be to also have the method that uses the non-central t cdf.  I suppose I could always revise !rhoCI to include that.  Maybe I'll do that some day.  ;-)  

Cheers,
Bruce

PS- STATS CORRELATIONS is a better mousetrap than !rhoCI, which is why I advise people to use it.  

jkpeck wrote

Bruce has an interest  in this question, since he inspired the STATS CORRELATION extension command :-)

As for adding that alternative CI formula, I need to look back at that code, but since Statistics has a noncentral t cdf, and I have code that can reach into the backend and run the relevant calculation, this is probably doable.  
But,  this command allows for a bootstrapped CI, so doesn't that cover the dichotomous case?