I've generated first differences for an ordered probit model with three
values (0,1,2). Is it okay to present compare/histograms of the
probabilities for each value (0,1,2) as opposed to ternary plot? Each
probability has rather large confidence intervals which make the ternary
less clear than it would be otherwise.
Any suggestions would be appreciated!
Andrew
--
Andrew Reeves
reeves(a)fas.harvard.edu
617.493.3485 tel.
301.639.8369 cell.
http://people.fas.harvard.edu/~reeves/
When i asked gary in lecture, he said it was a rare event because its a 0/1
variable and out of like 900 obs only 50 are 1. So he said use relogit
because regular logit would be biased.
----- Original Message -----
From: "Kosuke Imai" <kimai(a)fas.harvard.edu>
To: "Traci Burch" <tburch(a)fas.harvard.edu>
Sent: Wednesday, May 07, 2003 5:13 PM
Subject: Re: [gov2001-l] Rare Events, Relogit, and Predicted Values
> I'm not sure what your question is... If it's a random sample, why do you
> want to use relogit?
>
> Kosuke
>
> On Wed, 7 May 2003, Traci Burch wrote:
>
> > How would one go about producing predicted values for a model run using
> > Relogit or its equivalent in R? I have survey data that appears to be
> > randomly selected (no case control or anything like that) and time is
> > not a factor. Is it possible to do so (its not listed as a potential
> > quantity of interest in the lecture notes)? if not, what other quantity
> > of interest can I use to evaluate model fit?
> >
> > Traci
> >
>
So i just installed car.
Got the following warning message:
Delete downloaded files (y/N)? N
The packages are in /tmp/Rtmp22724/Rinstdir327b23c6
Warning message:
argument `lib' is missing: using /home/r/a/ravishan/.R/library in:
install.packages("car")
>
I then tried help(hccm) and got nothing.
Nirmala
--
**********************************************************************
Nirmala Ravishankar
First Year Graduate Student,
Government Department,
Harvard University
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How would one go about producing predicted values for a model run using =
Relogit or its equivalent in R? I have survey data that appears to be =
randomly selected (no case control or anything like that) and time is =
not a factor. Is it possible to do so (its not listed as a potential =
quantity of interest in the lecture notes)? if not, what other quantity =
of interest can I use to evaluate model fit? =20
Traci
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<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>How would one go about producing =
predicted values=20
for a model run using Relogit or its equivalent in R? I have =
survey data=20
that appears to be randomly selected (no case control or anything like =
that) and=20
time is not a factor. Is it possible to do so (its not listed as a =
potential quantity of interest in the lecture notes)? if not, what =
other=20
quantity of interest can I use to evaluate model fit? =
</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Traci</FONT></DIV></BODY></HTML>
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Dear all,
Quick question: does calculating a quantity of interest on 5 datasets and then
averaging the answer produce the same answer as combining the 5 into 1 dataset
and then doing the calculations?
Many thanks.
Best,
Dan
--
PhD Candidate in Government
Proctor
Harvard University
(617) 493-8402
If we are calculating confidence intervals by simulation, do we still need
to calculate panel corrected standard errors? (We have a pooled
cross-sectional time-series data set and a linear regression model.)
Thanks,
Anna
So when we use the "car" package, is hccm() the best/only way to obtain the
robust standard errors? Or am I missing something?
Thanks,
Phillip.
-------------------------------------------------
Phillip Y. Lipscy
Perkins Hall Room #129
35 Oxford Street
Cambridge, MA 02138
(617)493-4893 DORM
(617)851-8220 CELL
lipscy(a)fas.harvard.edu
http://www.people.fas.harvard.edu/~lipscy/
First Year Student, Ph.D. Program
Harvard University, FAS, Department of Government
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Hi,
I'm working with CLARIFY and would like to draw two kdensity plots on
the same figure in STATA (I want the chart to look like the one Kosuke
made for the answer key to Assignment 6). Has anyone figured out how to
do this?
Thanks,
Beau
Beau Kilmer
Pre-doctoral Candidate
John F. Kennedy School of Government
PhD Mailboxes
79 JFK Street
Cambridge, MA 02138
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<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Hi,</span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>I’m working with CLARIFY and would like to draw =
two kdensity
plots on the same figure in STATA (I want the chart to look like the one =
Kosuke
made for the answer key to Assignment 6). Has anyone figured out =
how to
do this?</span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Thanks,</span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Beau</span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=3DMsoAutoSig><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>Beau Kilmer</span></font></p>
<p class=3DMsoAutoSig><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>Pre-doctoral Candidate</span></font></p>
<p class=3DMsoAutoSig><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>John</span></font> F. Kennedy School of Government</p>
<p class=3DMsoAutoSig><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>PhD Mailboxes</span></font></p>
<p class=3DMsoAutoSig><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>79 JFK Street</span></font></p>
<p class=3DMsoAutoSig><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>Cambridge</span></font>, MA 02138</p>
<p class=3DMsoNormal><font size=3D2 face=3D"Times New Roman"><span =
style=3D'font-size:
11.0pt'> </span></font></p>
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