[R] Testing for normality of residuals in a regression model

Dimitris Rizopoulos dimitris.rizopoulos at med.kuleuven.ac.be
Fri Oct 15 13:10:12 CEST 2004

Hi Frederico,

take also a look at the package "nortest":



Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven

Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/16/396887
Fax: +32/16/337015
Web: http://www.med.kuleuven.ac.be/biostat/

----- Original Message ----- 
From: "Federico Gherardini" <f.gherardini at pigrecodata.net>
To: <R-help at stat.math.ethz.ch>
Sent: Friday, October 15, 2004 2:44 PM
Subject: [R] Testing for normality of residuals in a regression model

> Hi all,
> Is it possible to have a test value for assessing the normality of 
> residuals from a linear regression model, instead of simply relying 
> on qqplots?
> I've tried to use fitdistr to try and fit the residuals with a 
> normal distribution, but fitdsitr only returns the parameters of the 
> distribution and the standard errors, not the p-value. Am I missing 
> something?
> Cheers,
> Federico
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