Adjusted R-squared formula in lm()

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