Re: [R] statistics - hypothesis testing question

2007-09-14 Thread Pfaff, Bernhard Dr.
Hello Mark, in addition and complementing the already provided answers to your question. You want to consider the J-test, too. For an outline and the pitfalls of this test, see: http://citeseer.ist.psu.edu/cache/papers/cs/24954/http:zSzzSzwww.econ.qu

Re: [R] statistics - hypothesis testing question

2007-09-13 Thread Leeds, Mark (IED)
] statistics - hypothesis testing question On 9/13/2007 2:18 PM, Leeds, Mark (IED) wrote: I estimate two competing simple regression models, A and B where the LHS is the same in both cases but the predictor is different ( I handle the intercept issue based on other postings I have seen ). I estimate

Re: [R] statistics - hypothesis testing question

2007-09-13 Thread John Sorkin
Mark, Estimates of R values can be compared using Fishers r to z transform. Perhaps this will do what you wish to do. John John Sorkin M.D., Ph.D. Chief, Biostatistics and Informatics Baltimore VA Medical Center GRECC, University of Maryland School of Medicine Claude D. Pepper OAIC, University