[R] Chi Square with two tab-delimited text files

Petr Klasterecky klaster at karlin.mff.cuni.cz
Mon Feb 26 12:50:28 CET 2007

Carina Brehony napsal(a):
> Hi,
> I want to do a chi square test and I have two tab delimited text files with
> Expected and Observed values to compare.  Each file contains only the values

There are a lot of chi^2 tests, most of them compare O&E quantities and 
it is not clear which one you want to use. I'd guess a goodness of fit 
test, but who knows? See ?chisq.test and the examples given there. It 
also tells you that the y-argument is ignored if x is a matrix (that's 
probably the reason why you get different results using read.table and 
Petr Klasterecky
Dept. of Probability and Statistics
Charles University in Prague
Czech Republic

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