To avoid angry replies, let me first say that I know that the use of
Type III sums of squares is controversial, and that some statisticians
recommend instead that significance be judged using the non-marginal
terms in the ANOVA.  However, given that type III SS is also demanded by
some…  is there a function (equivalent to drop1 for lm) to obtain type
III sums of squares for mixed models using the lme function?

 

Bill Shipley

Associate Editor, Ecology

North American Editor, Annals of Botany

Département de biologie, Université de Sherbrooke,

Sherbrooke (Québec) J1K 2R1 CANADA

Bill.Shipley@USherbrooke.ca

 <http://callisto.si.usherb.ca:8080/bshipley/>
http://callisto.si.usherb.ca:8080/bshipley/

 


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