[R] An issue with White's test in Anova

[John Fox]

Dear David,

You've found a bug in Anova() for linear models that was introduced some
time ago when the linear.hypothesis() function [which is used by Anova()]
was modified not to report sums of squares for "White-adjusted" tests. I
have to think about should be done in this case.

Sorry,
 John

--------------------------------
John Fox, Professor
Department of Sociology
McMaster University
Hamilton, Ontario
Canada L8S 4M4
905-525-9140x23604
http://socserv.mcmaster.ca/jfox 
-------------------------------- 

> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch 
> [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of David Kaplan
> Sent: Friday, August 24, 2007 3:55 PM
> To: r-help at stat.math.ethz.ch
> Subject: [R] An issue with White's test in Anova
> 
> Hi all,
> 
> I'm running White's test to correct for non-constant error 
> variance and I am using the Anova function in the package 
> CAR.  My command structure is
> 
>  > Anova(scireg3, white.adjust="hc3")
> 
> where scireg3 is an object from lm.
> 
> I get the message
> 
> "Error in SS[i] <- SS.term(names[i]) : nothing to replace with"
> 
> What does this mean and how do I fix it.
> 
> Thanks in advance.
> 
> David
> 
> 
> 
> 
> --
> ==============================================================
> =============
> David Kaplan, Ph.D.
> Professor
> Department of Educational Psychology
> University of Wisconsin - Madison
> Educational Sciences, Room, 1061
> 1025 W. Johnson Street
> Madison, WI 53706
> 
> email: dkaplan at education.wisc.edu
> homepage: 
> http://www.education.wisc.edu/edpsych/facstaff/kaplan/kaplan.htm
> Phone: 608-262-0836
> 
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