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moyhzin
2001 Sep 11
2
correlation predictors problem
R colleagues,
I want
to get the correlation between the coefficients of a regression.
Everything seems OK, but when there are more than 3 regressors, the
correlation matrix is completely wrong, as follows:
> x.glm <- glm( bascule ~durP+ durI +durC+moyHzPB +moyHzIN, x,family=binomial)
> summary(x.glm,correlation=T)
Call:
glm(formula = bascule ~ durP + durI + durC + moyHzPB + moyHzIN,
family = binomial, data = x)
.......
........
(Dispersion parameter for binomial family taken to be 1)
Null deviance: 365.00 on 266 degrees of freedom...