[Gretl-users] scatterplot OLS fit issues
I too would have never guessed that it only displays the OLS fit if the
slope is significant.
I concur with Sven's opinion: I would rather have the decision lie with
me rather than on the machine and happenstance sample circumstances.
Finally, yes, adding linear, quadratic etc fits would be absolutely great!
As for the multi symbol labeling capability, sure, let's hold it off for
a future release.
Otherwise, me mouth is watering in expectation of version 1.5.1!
Methinks I have become a gretl ...addict.
John
Univ of Piraeus
Greece
>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.