[R] Regression Modeling query

Liaw, Andy andy_liaw at merck.com
Wed Jun 23 01:52:57 CEST 2004


Perhaps you have not read the posting guide, as the footer suggested?
There's a good reason why Bert said what he said.  To tell you the truth, I
was going to reply with something like:  I'd like to know how to get R to
cook dinner for me.  Can anyone help?

You really should learn how to ask questions in ways that will compell
people to respond with useful replies.  You have not told us the goal of the
analysis, the purpose for the model, the context the data came from, etc.,
not to say that the question you asked is so general that it has little to
do with R, other than the fact that you want to do it with R, and R-help is
not really the place to ask general stat questions.  You shouldn't expect
free stat consulting from a software mailing list.

Given the little info that you provided, I can recommend Prof. Harrell's
book "Regression Modelling Strategies".  You should read it over and over
until you can't get it out of your head.

Andy

> From: devshruti pahuja
> 
> Please ..... this is not a homework problem and i don't want 
> spoon feeding 
> but just the right way to approach the problem or the 
> reference from regular 
> texts. I'm doing this for my own learning and understanding 
> of regression 
> modeling.
> 
> I'm familiar with most of the techniques of regression  
> modeling but had a 
> problem with my last project which had 17 predictors and i 
> was able to 
> unravel very few interactions despite using most of the 
> techniques that were 
> there in some standard textbooks. I want an insight from 
> those who have 
> modelled fuzzy data --> logical tables and then tried to get 
> some behavioral 
> insights.
> 
> I don't mind coding my own R functions and possess a sound 
> familiarity with 
> Numerical Linear Algebra and Matrix theory. Secondly, i don't 
> want to dig 
> deep into books to find little useful. Any references that 
> you provide will 
> be pretty helpful
> 
> Please advise
> 
> -Dev
> 
> 
> >From: Berton Gunter <gunter.berton at gene.com>
> >To: devshruti pahuja <devshruti at hotmail.com>
> >Subject: Re: [R] Regression Modeling query
> >Date: Tue, 22 Jun 2004 13:44:13 -0700
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> >devshruti pahuja wrote:
> >
> > > Hi All
> > >
> > > I received a raw data set with one record per tennis 
> player (both male 
> >and
> > > female) and then i cured it by aggregation i.e by 4 age 
> groups, 2 gender
> > > levels and 6 income levels. Gender and Income are 
> categorical variables.
> > > Please advise me how to use 'R' to model this data set 
> (Actually, i want 
> >to
> > > know the right regression technique and steps to do that, 
> including 
> >removing
> > > outliers at the begining and looking for hidden interactions).
> > >
> >
> >--- in which case, shouldn't we also sign and hand in the 
> homework for you?
> >
> >-- Bert
> >
> 
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