Re: [R] normality tests [Broadcast]

2007-05-29 Thread Bert Gunter
Subject: Re: [R] normality tests [Broadcast] The normality of the residuals is important in the inference procedures for the classical linear regression model, and normality is very important in correlation analysis (second moment)... Washington S. Silva > Thank you all for your replies they h

Re: [R] normality tests [Broadcast]

2007-05-28 Thread Thomas Lumley
On Mon, 28 May 2007, Martin Maechler wrote: >> "LuckeJF" == Lucke, Joseph F <[EMAIL PROTECTED]> >> on Fri, 25 May 2007 12:29:49 -0500 writes: > >LuckeJF> Most standard tests, such as t-tests and ANOVA, >LuckeJF> are fairly resistant to non-normalilty for >LuckeJF> signific

Re: [R] normality tests [Broadcast]

2007-05-28 Thread Martin Maechler
lto:[EMAIL PROTECTED] On Behalf LuckeJF> Of Liaw, Andy Sent: Friday, May 25, 2007 12:04 PM LuckeJF> To: [EMAIL PROTECTED]; Frank E Harrell Jr Cc: LuckeJF> r-help Subject: Re: [R] normality tests [Broadcast] LuckeJF> From: [EMAIL PROTECTED] >> On 25/05/07, Frank

Re: [R] normality tests [Broadcast]

2007-05-25 Thread Frank E Harrell Jr
in both tails > (though correct on the average). I see this the opposite way: > nonparametric tests works fine if normality holds. > > Note that the CLT helps with type I error but not so much with type II > error. > > Frank > >> -Original Message- >>

Re: [R] normality tests [Broadcast]

2007-05-25 Thread Cody_Hamilton
t the CLT helps with type I error but not so much with type II error. Frank > > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Liaw, Andy > Sent: Friday, May 25, 2007 12:04 PM > To: [EMAIL PROTECTED]; Frank E Harrell Jr > Cc: r-help

Re: [R] normality tests [Broadcast]

2007-05-25 Thread Cody_Hamilton
half Of Liaw, Andy > Sent: Friday, May 25, 2007 12:04 PM > To: [EMAIL PROTECTED]; Frank E Harrell Jr > Cc: r-help > Subject: Re: [R] normality tests [Broadcast] > > From: [EMAIL PROTECTED] > > > > On 25/05/07, Frank E Harrell Jr <[EMAIL PROTECTED]> wrote: > > >

Re: [R] normality tests [Broadcast]

2007-05-25 Thread wssecn
; > idea. > > > > -Original Message- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Liaw, Andy > > Sent: Friday, May 25, 2007 12:04 PM > > To: [EMAIL PROTECTED]; Frank E Harrell Jr > > Cc: r-help > > Subject: Re

Re: [R] normality tests [Broadcast]

2007-05-25 Thread Frank E Harrell Jr
>> [mailto:[EMAIL PROTECTED] On Behalf Of Liaw, Andy >> Sent: Friday, May 25, 2007 12:04 PM >> To: [EMAIL PROTECTED]; Frank E Harrell Jr >> Cc: r-help >> Subject: Re: [R] normality tests [Broadcast] >> >> From: [EMAIL PROTECTED] >> > >> > On 25/05

Re: [R] normality tests [Broadcast]

2007-05-25 Thread Frank E Harrell Jr
gt; [mailto:[EMAIL PROTECTED] On Behalf Of Liaw, Andy > Sent: Friday, May 25, 2007 12:04 PM > To: [EMAIL PROTECTED]; Frank E Harrell Jr > Cc: r-help > Subject: Re: [R] normality tests [Broadcast] > > From: [EMAIL PROTECTED] >> On 25/05/07, Frank E Harrell Jr <[EMAIL

Re: [R] normality tests [Broadcast]

2007-05-25 Thread gatemaze
> idea. > > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Liaw, Andy > Sent: Friday, May 25, 2007 12:04 PM > To: [EMAIL PROTECTED]; Frank E Harrell Jr > Cc: r-help > Subject: Re: [R] normality tests [Broadcast] > > From:

Re: [R] normality tests [Broadcast]

2007-05-25 Thread Lucke, Joseph F
idea. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Liaw, Andy Sent: Friday, May 25, 2007 12:04 PM To: [EMAIL PROTECTED]; Frank E Harrell Jr Cc: r-help Subject: Re: [R] normality tests [Broadcast] From: [EMAIL PROTECTED] > > On 25/05/07, Frank E

Re: [R] normality tests [Broadcast]

2007-05-25 Thread Liaw, Andy
From: [EMAIL PROTECTED] > > On 25/05/07, Frank E Harrell Jr <[EMAIL PROTECTED]> wrote: > > [EMAIL PROTECTED] wrote: > > > Hi all, > > > > > > apologies for seeking advice on a general stats question. I ve run > > > normality tests using 8 different methods: > > > - Lilliefors > > > - Shapiro-Wilk