[Gretl-users] Visualization of an ordered probit Modell
j.iseringhausen at web.de
Mon Nov 28 18:36:49 EST 2016
I am kind of a noob in econometrics. For my thesis I had to run a
regression to determine why people use some spacial product.
My AV is dicrete but ranged (3 steps). So I choosed the ordered porbit
regression and calculated the MEMs. (could not find a way for AMEs)
All results are fine and there was no problem to interpret them.
And now - my question:
I tried to put all Information from the Gretl Output into a grafic (I
will attach it)
May you can take a minute an tell me, if it makes sense.
As I mentioned, I am a newbie - so excuse if this is stupid...
You need to know: there are 3 categories but two (the red ones) are the
"User" and one (green one) "Nonuser". The circles should represent that.
Sizes (boxes and circles) should represent the total data "n=369".
The 3 Output-categories are the boxes in the circles. MEP-Int and
MEP-Gel (User) MEP-Nicht (Nonuser). Darker ones are the "Pr=" values for
the each Output in the first line of the MEMs-Output. As I know, these
are the predicted probabilitys for each Output, if all regressors are
held at their means... The lighter ones are the "true" observed data.
Same for the circles. Darker ones for the Output and lighter ones for
the observed Data.
I my thesis I want to argue, that the prediction just separates the user
and nonuser, but cant distinguish between the to usergoups too good....
Than I am up to go further and put some more information to the
regression (information i just got of the users) an do another ordered
probit with just the two user-Output... an the new model is quite good.
I would apprechiate an answer very much. Please excuse my floppy
english. Its next to 1 am - and I doing thesis for 2 month day and night
best gegards J.I.
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