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Re: st: re: logistic function

From   John Ataguba <>
Subject   Re: st: re: logistic function
Date   Thu, 18 Jun 2009 18:13:39 +0000 (GMT)

This is brilliant Kit.

It worked.


----- Original Message ----
From: Kit Baum <>
Sent: Thursday, 18 June, 2009 19:51:44
Subject: st: re: logistic function

Jon said

Are the mu and s mean and standard deviations of the predictions? I'm not clear on this.

Yes.  In the case of the normal the predicted values are themselves z-scores, so you can feed them to the normal CDF, but a bit more work is needed for the logistic (which e.g. does not have unit variance). If you compare predictnl for probit and logit for this model, they do not differ by much.

Kit Baum   |   Boston College Economics & DIW Berlin   |
                              An Introduction to Stata Programming  |
   An Introduction to Modern Econometrics Using Stata  |

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