Re: [R] Gamma for ordinal trends

From: Jonathan Baron <baron_at_psych.upenn.edu>
Date: Wed 31 Aug 2005 - 20:31:23 EST

On 08/31/05 17:46, Wuming Gong wrote:
> Dear list,
>
> Are there any functions for calculating gamma (and its standard
> error), which measures the association of ordinal factors in I x J
> contingency table. I did a RSiteSearch but did not find any clues...

You have to look for Goodman-Kruskal gamma. It is a bit obscure. It is rcorr.cens in the Hmisc package.

The significance test is the same as for Kendall's tau, according to some books. I don't know about standard error.

Jon

-- 
Jonathan Baron, Professor of Psychology, University of Pennsylvania
Home page: http://www.sas.upenn.edu/~baron

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Received on Wed Aug 31 20:36:36 2005

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