Re: [R] Tests for the need of cluster analysis

From: Tal Galili <tal.galili_at_gmail.com>
Date: Mon, 02 May 2011 20:02:01 +0300

Hi Mary,
Are you using R for your other analysis? If so, What commands are you using for your analysis?

p.s: please keep the rest of the R-help mailing list in the loop.

Cheers,
Tal

----------------Contact
Details:-------------------------------------------------------
Contact me: Tal.Galili_at_gmail.com | 972-52-7275845 Read me: www.talgalili.com (Hebrew) | www.biostatistics.co.il (Hebrew) | www.r-statistics.com (English)

On Mon, May 2, 2011 at 4:24 PM, MARY A. WEISS <mweiss_at_temple.edu> wrote:

> Hi Tal,
>
> Thanks for your answer. I am running models with two-way fixed effects and
> two-way fixed effects with a cluster option. The results are very
> different. I wanted to know if it is appropriate to cluster my data or
> not. In looking through the R manual, I thought that prabclus might help me
> answer the question. Does prabclus include any tests that will tell me if
> cluster analysis is appropriate to use with my data? That is, is cluster
> analysis valid for my data?
>
> Thanks in advance for any help you can give me. I really appreciate it.
>
> Mary
>
> On Mon, May 2, 2011 at 7:20 AM, Tal Galili <tal.galili_at_gmail.com> wrote:
>
>> Hi Mary,
>> I'm not sure I understood your question.
>>
>> Are you using this package:
>> http://cran.r-project.org/web/packages/prabclus/index.html
>> <http://cran.r-project.org/web/packages/prabclus/index.html>And asking
>> how to decide if to use it or not?
>>
>> ----------------Contact
>> Details:-------------------------------------------------------
>> Contact me: Tal.Galili_at_gmail.com | 972-52-7275845
>> Read me: www.talgalili.com (Hebrew) | www.biostatistics.co.il (Hebrew) |
>> www.r-statistics.com (English)
>> ----------------------------------------------------------------------------------------------
>>
>>
>>
>>
>>
>>
>> On Sun, May 1, 2011 at 7:54 PM, mary weiss <mweiss_at_temple.edu> wrote:
>>
>>> Does R have the capability to perform tests for the need of clustering
>>> analysis (e.g., in prabclus)? I am using panel data with two-way fixed
>>> effects but am unsure about whether I should be using a cluster option as
>>> well to estimate my model.--
>>> View this message in context:
>>> http://r.789695.n4.nabble.com/Tests-for-the-need-of-cluster-analysis-tp3488097p3488097.html
>>> Sent from the R help mailing list archive at Nabble.com.
>>>
>>> ______________________________________________
>>> R-help_at_r-project.org mailing list
>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>> PLEASE do read the posting guide
>>> http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html>
>>> and provide commented, minimal, self-contained, reproducible code.
>>>
>>
>>
>
>
> --
> Mary A. Weiss, Ph. D.
> Deaver Prof. of Risk, Insurance & Healthcare Mgmt
> Editor, Risk Management and Insurance Review
> Risk, Ins. & Healthcare Mgmt Dept.
> Fox School of Business
> 1801 Liacouras Walk 6th Fl (006-07)
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> 215-204-1916
>

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