Hi, I am currently using STATA in my analysis. STATA has a cluster option but does not have any tests for whether cluster analysis is necessary or not for a dataset. So I am trying to figure out whether R could be used to test whether I need to be doing cluster analysis or not. If R does tests to determine whether cluster analysis is valid for my data, I will learn R and use it on my data.
My data are panel data consisting of 49 states and 25 years. Currently, I am estimating models with fixed state and time effects. Thanks for any help you can give me. Cheers, Mary On Mon, May 2, 2011 at 1:02 PM, Tal Galili <tal.gal...@gmail.com> wrote: > 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.gal...@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 <mwe...@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.gal...@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.gal...@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 <mwe...@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@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) >> Temple University >> Philadelphia, PA 19122 >> 215-204-1916 >> > > -- 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) Temple University Philadelphia, PA 19122 215-204-1916 [[alternative HTML version deleted]] ______________________________________________ R-help@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 and provide commented, minimal, self-contained, reproducible code.
