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st: RE: Graph - 3SLS

From   "Nick Cox" <>
To   <>
Subject   st: RE: Graph - 3SLS
Date   Thu, 5 Sep 2002 18:34:51 +0100

Sylvia Kritzinger

> I would like to draw some gaphs with the predicted 
> probabilities I got from
> a Three-Stage-Least-Square-Regression, in order to show 
> increases/decreases
> of the items of my dependent variable depending on the main 
> independent
> variable.
> The comand
> "graph pre1hat pre2hat pre3hat (independent variable), c(sss)"
> is not working or only working in parts.

I am not clear what the precise problem is, 
but here are some guesses. 

1. You can't get a smooth set of curves plotted 
against one independent variable because the model 
includes others. The usual remedy is -adjust- 

2. You may need to tune the -bands()- option. 

3. The -c(sss)- option will connect 
according to the current sort order. 
Occasionally you need to add the -sort- 

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