[R] Error using "White-corrected" Anova (white.adjust="hc3")

From: Kilian_Wasmer <Kilian_Wasmer_at_web.de>
Date: Fri 27 Oct 2006 - 10:18:50 GMT


Hello.

I try to compute a "White-corrected" ANOVA. Therefore I use the command "Anova" implemented in the car()-package): Anova(modelname, white.adjust="hc3")
and receive the error message:
"Fehler in SS[i] <- SS.term(names[i]) : nichts zu ersetzen" (German)
"Error in SS[i] <- SS.term(names[i]) : nothing to replace" (probably being the message in the English version)
I also tried the example mentioned in Fox (2002, "An R and S-Plus companion..."), with the "ornstein" data set but received the same message. If I don't use the argument "white.adjust="hc3" the standard anova is computed without any error messages..

Any hints?

Kilian

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