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
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
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
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-
>>
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
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:
> > >
; > 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
>> [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
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
> 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:
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
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
12 matches
Mail list logo