[R] bimodal data

Charles Annis, P.E. Charles.Annis at StatisticalEngineering.com
Fri Dec 2 14:43:31 CET 2005

Your problem sounds like it could be modeled with logistic regression
whereby the propensity for one result or another is "linked" to the factors
that control it.  Logistic regressions are a special case of generalized
linear models.  Look at ?glm

Charles Annis, P.E.

Charles.Annis at StatisticalEngineering.com
phone: 561-352-9699
eFax:  614-455-3265

-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Simone Immler
Sent: Friday, December 02, 2005 7:43 AM
To: r-help at stat.math.ethz.ch
Subject: [R] bimodal data

  Does anybody have a good tip of how to treat bimodal data to perform
statistical analyses? My data set ranges from -1 to 1 (any values are
posssible in between) and most data are either close to -1 or close to 1.
They are the results of a two choice experiment where individuals could
choose more than once in either direction and scores were calculated.

Simone Immler
University of Sheffield
Dep. Animal & Plant Sciences
Alfred Denny Building
Western Bank
Sheffield S10 2TN, UK


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