Ryan's multiple range tests

Tables of critical values (k = 4, ..., 8)

• 10% table
• 5% table
• 1% table

Why are there not entries for k = 3 ?

Note. This multiple range procedure has some aliases:

• Ryan-Einot-Gabriel-Welsch (REGW) procedure (e.g., Hsu, SAS, SPSS)
• Tukey-Welsch procedure (e.g., Hochberg & Tamhane)
• Tukey procedure (e.g., Lehmann)

References

• Hochberg, Y. & Tamhane, A. C. (1987). Multiple Comparison Procedures, Wiley.
• Hsu, J. C. (1996). Multiple Comparisons: Theory and Methods, Chapman and Hall.
• Lehmann, E. L. (1986). Testing Statistical Hypotheses, 2nd ed., Wiley.