Hi,
I meet some tecnhical problem when performing type III test in an
analysis of covariance.
I code with contrast=sum and precise type="III" for the anova table.
There is a warning message like this:
Models with response "NULL" removed and type I is performed by default.
And R-Help is not very clear on use of contrasts.
Please don't rush in the usual holy war about this topic. And if
somebody as a concrete example...
Thank you
Alex
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