Rcommander and simple chisquare

Dear Christian,
From the Rcmdr menus, select "Statistics -> Summaries -> Frequency
distributions", and check the "Chisquare goodness of fit test" box in the
resulting dialog. This will bring up a dialog box where you can enter
hypothesized probabilities from which expected frequencies will be
calculated.

Regards,
 John

--------------------------------
John Fox
Department of Sociology
McMaster University
Hamilton, Ontario
Canada L8S 4M4
905-525-9140x23604
http://socserv.mcmaster.ca/jfox 
--------------------------------
-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch 
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Christian Jost
Sent: Thursday, September 15, 2005 5:40 AM
To: r-help at stat.math.ethz.ch
Subject: [R] Rcommander and simple chisquare

In this years biostat teaching I will include Rcommander (it 
indeed simplifies syntax problems that makes students 
frequently miss the core statistical problems). But I could 
not find how to make a simple chisquare comparison between 
observed frequencies and expected frequencies (eg in genetics 
where you expect phenotypic frequencies corresponding to 3:1 
in standard dominant/recessif alleles). Any idea where this 
feature might be hidden? Or could it be added to Rcommander?

Thanks, Christian.

ps: in case I am not making myself clear, can Rcommander be 
made to perform
 chisq.test(c(61,39),p=c(0.75,0.25))

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Rcommander and simple chisquare

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