Comparing proportions between groups
Okay, I will do that, thank you. prop.test seems to work, too, someone wrote me?! prop.test(x=c(40,100), n=c(200,300)) I tried it and it seems fine.. is it the same or is chisq.test better? I will read a bit about chi-square tests now.. Thanks a lot, Lila
Richard Cotton wrote:
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.
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