Re: [R] Why two chisq.test p values differ when the contingency

2003-07-16 Thread Peter Dalgaard BSA
"Shi, Tao" <[EMAIL PROTECTED]> writes: > Hi, Ted: > > I guess this problem is platform-dependent. I just tied it on a R > 1.6.1 runing on Win2K, it gave me two different p values. But when I > tried it on R1.7.0 on a Linux Server, I got the similar result as > you did. I have filed a bug-report

RE: [R] Why two chisq.test p values differ when the contingency

2003-07-15 Thread Shi, Tao
Hi, Ted: I guess this problem is platform-dependent. I just tied it on a R 1.6.1 runing on Win2K, it gave me two different p values. But when I tried it on R1.7.0 on a Linux Server, I got the similar result as you did. I have filed a bug-report as Peter suggested. ...Tao [EMAIL PROTECTED

RE: [R] Why two chisq.test p values differ when the contingency

2003-07-15 Thread Ted Harding
On 15-Jul-03 Shi, Tao wrote: > Hi, Ted and Dennis: > > Thanks for your speedy replies! I don't think this happens just > randomly, rather, I'm thinking it may be due to the way chisq.test > function handles simulation. Here shows why: (Ted, I think there is an > error in your code, "tx" should

Re: [R] Why two chisq.test p values differ when the contingency

2003-07-15 Thread Peter Dalgaard BSA
"Shi, Tao" <[EMAIL PROTECTED]> writes: > Hi, Ted and Dennis: > > Thanks for your speedy replies! I don't think this happens just randomly, rather, > I'm thinking it may be due to the way chisq.test function handles simulation. Here > shows why: (Ted, I think there is an error in your code, "

Re: RE: [R] Why two chisq.test p values differ when the contingency

2003-07-15 Thread Ravi Varadhan
ginal Message - From: "Shi, Tao" <[EMAIL PROTECTED]> Date: Tuesday, July 15, 2003 4:37 pm Subject: RE: [R] Why two chisq.test p values differ when the contingency > Hi, Ted and Dennis: > > Thanks for your speedy replies! I don't think this happens just > random

RE: [R] Why two chisq.test p values differ when the contingency

2003-07-15 Thread Shi, Tao
Hi, Ted and Dennis: Thanks for your speedy replies! I don't think this happens just randomly, rather, I'm thinking it may be due to the way chisq.test function handles simulation. Here shows why: (Ted, I think there is an error in your code, "tx" should be t(x) ) > x [,1] [,2] [1,] 14

RE: [R] Why two chisq.test p values differ when the contingency

2003-07-15 Thread Ted Harding
On 15-Jul-03 Tao Shi wrote: >>x > [,1] [,2] > [1,] 149 151 > [2,]18 >>t(x) > [,1] [,2] > [1,] 1491 > [2,] 1518 >>chisq.test(x, simulate.p.value=T, B=10) > Pearson's Chi-squared test with simulated p-value (based on > 1e+05 replicates) > data: x > X-squared

[R] Why two chisq.test p values differ when the contingency tableis transposed?

2003-07-15 Thread Tao Shi
I'm using R1.7.0 runing with Win XP. Thanks, ...Tao x [,1] [,2] [1,] 149 151 [2,]18 t(x) [,1] [,2] [1,] 1491 [2,] 1518 chisq.test(x, simulate.p.value=T, B=10) Pearson's Chi-squared test with simulate