Hello,
You are computing the lower tail value, for chi-squared tests it's
probably the upper tail you want.
p.val1 <- 1 - pchisq(Stat, df)
p.val2 <- pchisq(Stat, df, lower.tail=FALSE)
p.val1 == p.val2
Hope this helps,
Rui Barradas
Em 06-06-2012 02:31, Manish Gupta escreveu:
Hi,
My input is chi square statistical value and degrees of freedom. But i m
getting different p values with the above formula.
I double checked my values with the below calculator.
http://vassarstats.net/tabs.html#csq
Pls help me out.
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