On Feb 17, 2012, at 2:36 PM, Ali2006 wrote: > can any one please tell me how can I Compute the covariance matrix > of (Y) > which is 5 variables .. without using a built-in function?????? > > > 2) how (cov) works ( I need to get the details for this function ??? http://cran.r-project.org/doc/Rnews/Rnews_2006-4.pdf > -- David Winsemius, MD West Hartford, CT