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Re: st: RE: probit model sample size


From   dk <statad27@googlemail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: probit model sample size
Date   Sat, 3 Jul 2010 00:25:56 +0200

Thanks Tony,

You mean I can use the probit model for 300 sample size, 20
explanatory variables, but I have to interpret the results carefully.

Thanks.





On Fri, Jul 2, 2010 at 11:30 PM, Lachenbruch, Peter
<Peter.Lachenbruch@oregonstate.edu> wrote:
> You generally need about 8 to 10 times as many observations as you have variables.  You may be overfitting your data.  Proceed with caution.
>
> Tony
>
> Peter A. Lachenbruch
> Department of Public Health
> Oregon State University
> Corvallis, OR 97330
> Phone: 541-737-3832
> FAX: 541-737-4001
>
>
> -----Original Message-----
> From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of dk
> Sent: Friday, July 02, 2010 1:53 PM
> To: statalist@hsphsun2.harvard.edu
> Subject: st: probit model sample size
>
> I want to know about the sample size for the probit model. If i have a
> sample size of 300 and using 20 explanatory variables, after running
> the model, I have carried various goodness-of-fit test. and the result
> shows that our model fit the data.
>
> should I use the probit model or not.
>
> Thanks in advance.
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