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 ??? -- View this message in context: http://r.789695.n4.nabble.com/covariance-tp4398242p4398242.html Sent from the R help mailing list archive at Nabble.com.