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You're missing a "*" between the coefficient and gdpc1000, With regards to the insufficient observations, and changing results, they're probably down to what you have as starting values - pay attention to what is in C before you estimate. How do I specify starting values??? I did not see ...

How do I specify starting values??? I did not see any dialog.

I am trying to do a simple nonlinear estimation and I get many errors, mostly "insufficient number of observations". Moreover, sometimes I am trying to re-estimate a previous estimation and I get "Near singular matrix). It may be my machine, but I am attaching the workfile, just in ca...

This may be a naive question, but how can one estimate (calculate) the value of the constant in this case?

Panel data, EGLS estimation. I add a variable both R and adj. R decrease. I run an omitted variable test, the variable is significant. The number of obs does not change (8 periods, 28 consecrations, 140 obs). Any idea why is this happening? Thanks,

Thank you so much startz!

This is a simple question, sorry if it is naive. I am estimating:

y-y(-4) c x1(-4)

Do I write:

y-y(-4) c x1(-4)

or

y-y(-4) c x1 (if eViews changes the reference year by default)?