On Jan 29, 2010, at 11:11 AM, eric lee wrote:
Hello, Can you tell me what R function to use to do a two-sample chi-squared test? I want to see if two distributions are significantly different from each other, and I don't specify the theoretical distribution of either. For example, I have the following fake count data: x <- sample(1:10,50,replace=TRUE) y <- sample(1:10,100,replace=TRUE) I saw chisq.test in the stats package, but that looks like a one-sample test.
Nope. You do need to supply it with the right organization of data, though. In your case that would be a 2 x 10 or a 10 x 2 matrix (so (2-1)x(10-1)=9 d.f)
?table ?matrix
I'm running version 2.7.2 on windows xp.
Probably has very little bearing on this problem, but that is considered to be badly outdated in 2010.
Thanks.
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