Hi!
 the warning you got
"Chi-squared approximation may be incorrect"
is because probably there are less than 5 observations in
the cell. Maybe will help to 
try fisher.test()

Cheers

Anna







----- Messaggio originale -----
Da: My Coyne <mcoyne@boninc.com>
A: r-help@stat.math.ethz.ch
Inviato: Lunedì 14 gennaio 2008, 21:51:30
Oggetto: [R] In chisq.test(x) : Chi-squared approximation may be incorrect

Hello,

 

I received the following warning when running chi-square;

n  Is there a way to catch the 'error' code of 'warning' after run
chisq.test(x)?

n  What does this error mean?

 

Thank you for your help.

 

 


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