[thisisnotmyname]

They're presenting averages, which should always be accompanied by the standard deviations, otherwise they're close to meaningless. I actually think box plots would be better here.

[capnrefsmmat]

Indeed. It's hard to tell if any of the differences are significant, particularly when you compare with so many traits -- the chances of a false positive are very high.

I have a statistics final exam coming up; if the complete data set were available, I'd love to play with it for practice.