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stdcoef
2010 Aug 04
2
regression analysis with interactions
Hello,
I have got a linear model that looks like this:
lm(criterion ~ variable.A*variable.a + variable.B*variable.b + variable.C *variable.c)
The output computed with stdCoeff() seems to be all right, but it does not show the coefficients of the interaction of the first pair of variables. Instead, it shows "NA":
(Intercept)
NA
variable.A
0.0925094150
variable.a
0.1517246479
variable.B
-0.0023847092
v...