Hi, 

I search on your website for a definition of the CORDIF test, but it wasn’t 
successful. I’m analyzing an article that use that test and it’s not really 
documented on the net. The article refers to your website, so I pretend that 
you will be able to give me a brief explanation of this test. Here is the cote 
that talk about this test in my article : 

‘' To compare these regressions and to see which—either body height or LLL—is 
best related to performance (Pearson correlation coefficients comparison), a 
CORDIF test (R software [www.r-project.org], multilevel package, ver- sion 
2.12.1) was performed.

Does it use parametric or non-parametric values ?
Is it a test to compare 2 groups only or it can be used for a comparison of 
more than two groups ?
Why is it so hard to find information on that test on the net ?

Thanks for your time
Have a nice day 

Elizabeth Caron
Physical therapist student, Laval University, Qc, Canada
 

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