I thought that function var() and first element of function acf(object, type=c('covariance')) should give me the same results. But they differ. Can someone share an explanation. -- View this message in context: http://r.789695.n4.nabble.com/Variance-vs-covariance-tp2173501p2173501.html Sent from the R help mailing list archive at Nabble.com.