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reference on contr.helmert and typo on its help page.

Peng Yu 
I'm wondering which textbook discussed the various contrast matrices
mentioned in the help page of 'contr.helmert'. Could somebody let me
know?

BTW, in R version 2.9.1, there is a typo on the help page of
'contr.helmert' ('cont.helmert' should be 'contr.helmert').

Thread (2 messages)

Peng Yu reference on contr.helmert and typo on its help page. Nov 8 David Winsemius reference on contr.helmert and typo on its help page. Nov 8