Nicole Janz <nicolejanz <at> gmail.com> writes: > > What is the exact formula used in R lm() for the Adjusted R-squared? How can I interpret it? >From the code of summary.lm(): ans$r.squared <- mss/(mss + rss) ans$adj.r.squared <- 1 - (1 - ans$r.squared) * ((n - df.int)/rdf) Does that answer your question? Ben Bolker