Re: [Gretl-users] Occasional problem with scatterplots
Allin Cottrell schrieb:
The OLS fitted line is displayed in a scatter plot only if the slope
coefficient is significant at the 10 percent level. (If you want an
actual versus fitted graph regardless of the significance of the fit,
you can estimate an OLS model and explicitly request such a plot via the
menus).
Good to know, because during lectures I couldn't explain to my students
why the line was sometimes there, sometimes not. To be honest, I think
it's better to not make it dependent on significance. At the stage of
plotting without estimating a model, I would never have guessed that
already some testing was going on.
A feature that might be nice to have is the option of adding various
sorts of fitted line to any X-Y scatter: linear, quadratic,
exponential... but I don't want to hold up version 1.5.1 waiting for
that right now.
Yes on both accounts.
-sven