[R] precision of std. error in summary

[Achim Zeileis]

On Fri, 10 Feb 2006 20:29:40 +0100 Angelo Secchi wrote:

> 
> Hi,
> 
> 
> On Fri, 10 Feb 2006 10:56:32 -0800
> Berton Gunter <gunter.berton at gene.com> wrote:
> 
> > 1. ?options  (Look for "scipen")
> 
> I'll check it
> 
> > 
> > 2. std error = Value/t value
> > 
> > 3. Why do you care with these values?! Seems silly. It's probably
> > off by more than you're worrying about due to numerical error,
> > deviation from assumptions, arbitrariness of tuning constants, etc.
> 
> I need to put something in the report I'm writing and make no sense to
> write std err=0.

You are aware that you can not only print the summary to the screen,
but also compute with the result, right? Look at
  summary(obj)$coefficients
in particular
  summary(obj)$coefficients[,2]
Z

> By the way
> 
> Thanks a lot
> 
> 
> 
> > 
> > -- Bert Gunter
> > Genentech Non-Clinical Statistics
> > South San Francisco, CA
> >  
> > "The business of the statistician is to catalyze the scientific
> > learning process."  - George E. P. Box
> >  
> >  
> > 
> > > -----Original Message-----
> > > From: r-help-bounces at stat.math.ethz.ch 
> > > [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Angelo
> > > Secchi Sent: Friday, February 10, 2006 10:44 AM
> > > To: r-help at stat.math.ethz.ch
> > > Subject: [R] precision of std. error in summary
> > > 
> > > 
> > > Hi,
> > > I'm doing robust regression with the following command
> > > 
> > > rlm(dip~ind1+ind2-1,method="M",psi=psi,maxit=1000,acc=1e-15)
> > > 
> > > now when I ask for a summary
> > > 
> > > summary(rlm(dip~ind1
> > > +ind2-1,method="M",psi=psi,maxit=1000,acc=1e-15))
> > > 
> > > I get
> > > 
> > > Coefficients:
> > >      Value       Std. Error  t value    
> > > ind1     -0.0377      0.0000 -24203.1415
> > > ind2      1.0370      0.0000 668735.7195
> > > 
> > > taht is no std error
> > > 
> > > I've already tryied puuting a "digits = 6" with no success.
> > > What is the proper way to ask R to provide more digits in the 
> > > std error? 
> > > Thanks
> > > 
> > > 
> > > -- 
> > > ========================================================
> > >  Angelo Secchi                     PGP Key ID:EA280337
> > > 
> > > ______________________________________________
> > > R-help at stat.math.ethz.ch mailing list
> > > https://stat.ethz.ch/mailman/listinfo/r-help
> > > PLEASE do read the posting guide! 
> > > http://www.R-project.org/posting-guide.html
> > > 
> >
> 
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