How does mlest generate the estimate for sigmahat, the variance-covariance matrix? It produces different values than when using cov(data.frame). -- View this message in context: http://r.789695.n4.nabble.com/variance-covariance-matrix-of-mlest-in-library-mvnmle-tp2232127p2232127.html Sent from the R help mailing list archive at Nabble.com.