# Re: st: URGENT! testing the equality of coefficients across quantiles

 From Robert Duval <[email protected]> To [email protected] Subject Re: st: URGENT! testing the equality of coefficients across quantiles Date Fri, 15 Oct 2004 00:57:41 -0400

```Sorry Fatma

After a second thought i think I misread your email. The code i sent
you doesn't work with parameters, but with means for one variable by
gropus (which could be quintiles of a variable). I'm a little bit
confused as to what is the estimation that you performed before?

best
robert

On Fri, 15 Oct 2004 00:31:12 -0400, Robert Duval <[email protected]> wrote:
> One option is to do one-way analysis of variance... see comand
> oneway... your code might look like
>
> on y_var quantile_var, tabulate
>
> cheers,
> robert
>
>
>
> On Thu, 14 Oct 2004 17:41:42 +0300, fatma bircan <[email protected]> wrote:
> > Fatma Bircan
> > Middle East Technical University
> > Department of Economics
> > 210-2032
> >
> > ------ Forwarded message -------
> >
> > From: fatma bircan <[email protected]>
> > [email protected]
> > Date: Thu, 14 Oct 2004 17:18:40 +0300
> >
> > Fatma Bircan
> > Middle East Technical University
> > Department of Economics
> > 210-2032
> >
> > How do I tset the equality of parameters across quantiles .
> >
> > I tried the following
> >
> > test [q10=q25=q50=q75=q90]:   yrschl
> >
> > ( 1)  [q10]yrschl - [q25]yrschl = 0
> > ( 2)  [q10]yrschl - [q50]yrschl = 0
> > ( 3)  [q10]yrschl - [q75]yrschl = 0
> > ( 4)  [q10]yrschl - [q90]yrschl = 0
> >
> >       F(  4,  5806) =    5.09
> >            Prob > F =    0.0004
> >
> > But it doesnt give all the combinations. I f I specify all the
> > combinations then the df changes. What should I do?
> >
> > *
> > *   For searches and help try:
> > *   http://www.stata.com/support/faqs/res/findit.html
> > *   http://www.stata.com/support/statalist/faq
> > *   http://www.ats.ucla.edu/stat/stata/
> > *
> > *   For searches and help try:
> > *   http://www.stata.com/support/faqs/res/findit.html
> > *   http://www.stata.com/support/statalist/faq
> > *   http://www.ats.ucla.edu/stat/stata/
> >
>
*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/
```

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