The Tukey-Kramer procedure allows us to simultaneously examine all pairs of population means after the ANOVA test has been completed without increasing the true α level.

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The Tukey-Kramer procedure is specifically designed for post-hoc analysis after an ANOVA test, allowing for the comparison of all possible pairs of group means while controlling the family-wise error rate, thus not increasing the overall α level for the set of comparisons.

The Tukey-Kramer Procedure Allows Us to Simultaneously Examine All Pairs