Message-ID: <16349007.post@talk.nabble.com>
Date: 2008-03-28T10:19:15Z
From: Richard Cotton
Subject: Comparing proportions between groups
In-Reply-To: <16348714.post@talk.nabble.com>
Lila86 wrote:
>
> I have two groups (men and women) and I know per group how many of them
> smoke or don't smoke (women 40 of 200; men 100 of 300). I would like to
> know how I can compare in R if men and women differ significantly in their
> smoking. However, because there are more men in the sample than women I
> cannot just compare the number of smokers and non-smokers in both groups,
> right?! (I would not really know how to do that either, to be honest :().
>
Read up on contingency tables, and take a look at ?chisq.test.
-----
Regards,
Richie.
Mathematical Sciences Unit
HSL
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