[R] LSD, HSD,...

Mendiburu, Felipe (CIP) F.MENDIBURU at CGIAR.ORG
Tue Jul 17 15:54:19 CEST 2007

Dear Adrain,

You can see the library agricolae for the functions LSD.test, HSD.test, and Waller.test for Waller-Duncan. The criterion is that LSD is more used for few treatments and HSD for many treatments (more than 5) the test of Waller is Bayes and minimizes the two types of error (I or II). In experiment with clones, we prefer Waller-Duncan.

Felipe de Mendiburu
International Potato Center Lima-Peru

-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch]On Behalf Of Adrian J. Montero
Sent: Monday, July 16, 2007 2:52 AM
To: r-help at stat.math.ethz.ch
Subject: [R] LSD, HSD,...

    I'm designing a experiment in order to compare the growing of 
several clones of a tree specie. It will be a complete randomized block 
design. How can I decide what model of mean comparision to choose? LSD, 
HSD,TukeyHSD,  Duncan,...?  Thanks in advance

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