Hi ..
lm() returns an effects component in its output. I read the explanation in
R but was not quite clear.
say my response is Y
and design matrix is X
say X has QR decomposition X=QR
is effects = Q (Q'Q)^-1 Q' Y ???
i am sure this is wrong as it did not match the output from lm() . what is
the actual calculation.
Harsh.
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