[R] doing a Tukey HSD post-hoc

[Leslie J Seltzer]

Hi all

I have a large spreadsheet (Excel) file with many rows and columns in it. I have four treatment groups and using the lm function shows that there is a significant omnibus R with respect to several of the variables. I want to do a Tukey HSD in R. How can I do this?

Leslie J. Seltzer, Ph.D.
Postdoctoral Fellow, CERL
Department of Psychology and Waisman Center
385 Waisman (Assay Lab)
University of Wisconsin-Madison
1500 Highland Ave
Madison, WI 53705
WORK: (608) 890-2525
CELL: (608) 886-6067