Re: st: standard deviation

[Steven Samuels <sjhsamuels@earthlink.net>]

somsupa

bysort indcode period: keep if _n==1

Then drop the individual variables like iccl.  By the way, the log   
of the SD will probably be a much better response variable than the  
SD itself.

Steve

On Oct 25, 2008, at 4:29 AM, somsupa Nopprach wrote:

> Dear Maarten buis,
> Thank you very much. I will try it.
> By the way, if i want to use the sd variable as a new time series  
> variable . how i can do it? should i use the reshape command  
> because now sd is duplicate ?
>
> somsupa
>
>
> --- On Fri, 10/24/08, Maarten buis <maartenbuis@yahoo.co.uk> wrote:
>
> > From: Maarten buis <maartenbuis@yahoo.co.uk>
> > Subject: Re: st: standard deviation
> > To: statalist@hsphsun2.harvard.edu
> > Date: Friday, October 24, 2008, 7:48 AM
> > --- somsupa Nopprach <nmayecon31@yahoo.com> wrote:
> > > I would like to compute standard deviation of ICC1
> > variable at each
> > > period by industry. I will use the  standard deviation
> > as my new time
> > > series variable for each industry.
> >
> > bys indcode period: egen sd = sd(icc1)
> >
> > Hope this helps,
> > Maarten
> >
> > -----------------------------------------
> > Maarten L. Buis
> > Department of Social Research Methodology
> > Vrije Universiteit Amsterdam
> > Boelelaan 1081
> > 1081 HV Amsterdam
> > The Netherlands
> >
> > visiting address:
> > Buitenveldertselaan 3 (Metropolitan), room N515
> >
> > +31 20 5986715
> >
> > http://home.fsw.vu.nl/m.buis/
> > -----------------------------------------
> >
> >
> >
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