Simon.Blomberg at anu.edu.au
Wed Nov 5 02:32:07 CET 2003
see ?fit.contrast in library gregmisc.
Simon Blomberg, PhD
Depression & Anxiety Consumer Research Unit
Centre for Mental Health Research
Australian National University
Simon.Blomberg at anu.edu.au +61 (2) 6125 3379
> -----Original Message-----
> From: Igor Roytberg [mailto:ir1982 at u.washington.edu]
> Sent: Wednesday, 5 November 2003 12:04 PM
> To: R-help at stat.math.ethz.ch
> Subject: [R] Contrast
> Could anyone please explain how to set up contrasts between
> means in R. I want to know if "before I conduct an experiment
> and believe the mean for 1 and 2 will be different from means
> 3 and 4, Is this true?" That is what I have to prove or
> disprove, I thought that contrasts would be the way to go.
> Thanks for the help.
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