[R] What is that?

Yves Gauvreau cyg at sympatico.ca
Thu Jul 13 19:07:42 CEST 2000


I did a scatter plot involving to variables x and y where x is a 2 levels factor and y is a numeric "vector". I kind of expected to see a series of points for both levels of x, which I got. But in addition there is also an horizontal rectangle and a line for both levels. My question is what's the meaning of these?


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