ls.diag and lsfit very basic question
MM wrote:
Hello, Is the "std.dev" component of ls.diag( lsfit(x,y) ) the sample standard deviation of the residuals of the fit? I have ls.diag(lsfit(xx,yy))$std.dev different from sd(lsfit(xx,yy)$residuals) where xx and yy are vectors of 5 elements.
Compare
ls.diag(lsfit(xx,yy))$std.dev
with
sd(resid(lsfit(xx,yy)))*sqrt(4/3)
and think about degrees of freedom.
Peter Ehlers
Regards,
______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.