Type I error control accuracy of four commonly used pairwise mean comparison procedures, conducted as protected or unprotected tests, is examined. If error control philosophy is experimentwise, Tukey’s HSD, as an unprotected test, is most accurate and if philosophy is per-experiment, Dunn-Bonferroni, conducted as an unprotected test, is most accurate.
Barnette, J. Jackson and McLean, James E.
"Type I Error Of Four Pairwise Mean Comparison Procedures Conducted As Protected And Unprotected Tests,"
Journal of Modern Applied Statistical Methods: Vol. 4
, Article 10.
Available at: http://digitalcommons.wayne.edu/jmasm/vol4/iss2/10