[R] What are Type II or III contrast? (contrast() in contrast package)
dwinsemius at comcast.net
Wed Feb 3 06:01:20 CET 2010
On Feb 2, 2010, at 11:38 PM, Peng Yu wrote:
> ?contrast in the contrast package gives me the following description.
> However, I have no idea what Type II and III contrasts are. Could
> somebody explain it to me? And what does 'type' mean here?
> *‘type’*: set ‘type="average"’ to average the individual contrasts
> (e.g., to obtain a Type II or III contrast)
In no particular order:
Don't expect any follow-up questions to be answered or further
citations offered. This is really more in the realm of statistics
education than an R specific question.
David Winsemius, MD
West Hartford, CT
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