> for educational purposes I wonder if it is possible to simulate > different data sets (or specifically residuals) for a linear regression. > I would like to show my students residuals with different means, > variances and distributions (normal, but also not normal) in the plots > created with the plot command for a lm-object. In addition it would be > nice to simulate although influencal values (high cooks distance and > leverage) > > lm.results <- lm(y~x,data) > plot(lm.results) > > Is there an easy way to do this? Or can this be done at all (and if yes, > any hints?:-)
Check out some neat ideas here: http://www4.stat.ncsu.edu/~stefanski/NSF_Supported/Hidden_Images/stat_res_plots.html Hadley -- http://had.co.nz/ ______________________________________________ R-help@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.