An Evaluation of Multiple Comparison Procedures

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Abstract
Least significant difference, Duncan's multiple range test, Student-Newman-Keuls, Tukey's significant difference, and Scheffe's significant difference procedures are compared. The criteria of comparison are Type I and Type II error probabilities. Type I error probabilities on 2-treatment and n-treatment bases are theoretically related. The theoretical error probabilities are compared to published observed error probabilities. The choice of a test procedure rests on the relative importance of Type I and Type II errors. Copyright © 1976. American Society of Animal Science . Copyright 1976 by American Society of Animal Science.