[R] testing diff for slopes and intercepts
Peter Dalgaard BSA
p.dalgaard at biostat.ku.dk
Mon Oct 8 14:48:54 CEST 2001
Bill Simpson <wsi at gcal.ac.uk> writes:
> This parametrization automatically compares
> inta vs intb
> inta vs intc
> But how to get test for diff of intb vs intc?
> Same question for slope: I already have
> slopea vs slopeb
> slopea vs slopec
> But how to get test for diff of slopeb vs slopec?
This is the sort of thing relevel() is for.
O__ ---- Peter Dalgaard Blegdamsvej 3
c/ /'_ --- Dept. of Biostatistics 2200 Cph. N
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907
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