Hello,
I find your recommended procedure not very sensible but:
a) sum(fit$residuals^2)/fit|$d||f.residual
|
b) This is a statistical question but, for instance, in the case of
repeated mesures. But you'd use the precision (1/variance) of the
original data, computed by groups of regressor.
Hop
Hello.
I'm am trying to follow a recommendation to deal with a dependent variable
in a linear regression.
I read that, due to the positive trend in my dependent variable residual vs
mean function, I should
1) run a linear regression to estimate the standard deviations from this
trend, and
2) run
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