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Re: st: Ologit question


From   "Anat (Manes) Tchetchik" <anatmanes@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Ologit question
Date   Wed, 31 Oct 2012 16:09:17 +0200

No,  I have no weighting term and havn't drop any case (I have 148 obs.)


On Wed, Oct 31, 2012 at 3:56 PM, JVerkuilen (Gmail)
<jvverkuilen@gmail.com> wrote:
> On Wed, Oct 31, 2012 at 9:23 AM, Anat (Manes) Tchetchik
> <anatmanes@gmail.com> wrote:
>> Dear statalist,
>>
>> Sorry for the probably trivial question
>> I ran an Ologit and received the following cutoffs:
>>
>>                 Coef.         Std. Err.                       95%
>> Conf. Interval]
>>  /cut1 |  -1.798009   2.900799                     -7.483471    3.887453
>>  /cut2 |   .7973023   2.793147                     -4.677166    6.271771
>>  /cut3 |   2.902347   2.794626                      -2.57502    8.379713
>> which means that the cutoffs are not significantly different.
>> Does it mean that the entire model is worthless?
>
> Before you jump to any conclusions about the machine not working make
> sure that the cord's plugged in. Did you forget a weighting term or
> did listwise deletion dump most of your cases? Standard errors of
> these cutoffs should be proportional to 1/sqrt(n) and these are huge.
> Usually what happens with a crappy model is that the terms end up not
> separated, but that's not what you have here.
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-- 
Anat Tchetchik, PhD
Department of Hotel and Tourism Management
Guilford Glazer Faculty of Business and Management
Ben-Gurion University of the Negev
P.O.Box: 653
Beer-Sheva, Israel, 84105

E-mail:       anat@som.bgu.ac.il
Phone         972-(0)8-6479735
Fax:           972-(0)8-6472920
Web:          http://cmsprod.bgu.ac.il/Eng/som/hotelmanage/Staff/Academic/ChechikA.htm
*
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