Hi Dan
Thank you for your reply, I was forgetting that I had to send
another mail about this issue. so your mail
is not too late!!!
I understand (or I think to!) your points and also the Nicholas Nagel's ones.
Following your considerations and my own experiences with
different data sets
Sebastiano,
I have just got the end of my mailbox and I noticed your email (meant to
reply a long time back). I also read Nicholas Nagel's reply. I think he does a
good job of summarising where we stand at the moment, but I would add a comment
(or two).
In my PhD many years ago I spent a
Sebastiano -
On your first point -
Even if the trend is deterministic in reality, i.e. the covariate and the TRUE
regressions coefficient are fixed in the real world, the regression
coefficients are unknown. Hence, an ESTIMATED regression coefficient is a
random variable.
On your second
