Hi all, I wonder if this kind of questions are ok in this list...
Quick question: What does it mean than the rank of the QR decomposition of a NxN matrix is N-1 ? m: NxN matrix qr(m)$rank equal to (N-1) Long version: I'm doing a manova on a matrix of 10 variables and 16 observations. > dim(tmp) [1] 16 10 > fit <- manova( tmp ~ treatment*mouse ) >results <- summary(fit,test="Wilks") ... residuals have rank 9 < 10 So the QR decomposition returns with a rank of 9. What does this mean ? Does this necessarily mean a linear dependency among the columns of the matrix ? Thanks Alex ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
