Re: [R] chi square table

2008-11-07 Thread Peter Dalgaard
Berwin A Turlach wrote: > > That's the problem with introductory textbook whose author think they > do the students a favour by using notation as z_alpha, z_0.01, > z_(alpha/2) instead of z_(1-alpha), z_0.99, z_(1-alpha/2), > respectively. In my opinion this produces in the long run only > more

Re: [R] chi square table

2008-11-06 Thread Berwin A Turlach
G'day Cruz, On Fri, 7 Nov 2008 09:47:47 +0800 cruz <[EMAIL PROTECTED]> wrote: > Hi, > > How do we get the value of a chi square as we usually look up on the > table on our text book? > > i.e. Chi-square(0.01, df=8), the text book table gives 20.090 > > > dchisq(0.01, df=8) > [1] 1.036471e-08 >

Re: [R] chi square table

2008-11-06 Thread Simon Blomberg
> qchisq(0.01, df=8, lower.tail=FALSE) [1] 20.09024 > See ?dchisq On Fri, 2008-11-07 at 09:47 +0800, cruz wrote: > Hi, > > How do we get the value of a chi square as we usually look up on the > table on our text book? > > i.e. Chi-square(0.01, df=8), the text book table gives 20.090 > > > dc

Re: [R] chi square table

2008-11-06 Thread Erik Iverson
> qchisq(0.01, df = 8, lower.tail = FALSE) [1] 20.09024 cruz wrote: Hi, How do we get the value of a chi square as we usually look up on the table on our text book? i.e. Chi-square(0.01, df=8), the text book table gives 20.090 dchisq(0.01, df=8) [1] 1.036471e-08 pchisq(0.01, df=8) [1] 2.

Re: [R] chi square table

2008-11-06 Thread David Scott
On Fri, 7 Nov 2008, cruz wrote: Hi, How do we get the value of a chi square as we usually look up on the table on our text book? i.e. Chi-square(0.01, df=8), the text book table gives 20.090 dchisq(0.01, df=8) [1] 1.036471e-08 pchisq(0.01, df=8) [1] 2.593772e-11 qchisq(0.01, df=8) [1] 1

[R] chi square table

2008-11-06 Thread cruz
Hi, How do we get the value of a chi square as we usually look up on the table on our text book? i.e. Chi-square(0.01, df=8), the text book table gives 20.090 > dchisq(0.01, df=8) [1] 1.036471e-08 > pchisq(0.01, df=8) [1] 2.593772e-11 > qchisq(0.01, df=8) [1] 1.646497 > nono of them give me 20.