Tukey's B method

Tukey's B method, also known as the Tukey-Kramer B procedure, or Tukey's Wholly Significant Difference (WSD) is a post-hoc multiple comparison statistical test used to identify which specific group means differ significantly from each other after a statistically significant result has been obtained from an analysis of variance (ANOVA). It is considered a compromise between two other popular multiple comparison procedures: Tukey's range test and the Newman-Keuls method.

The primary purpose of post-hoc tests like Tukey's B is to control the family-wise error rate (FWER) when performing multiple comparisons. Without such control, the probability of making at least one Type I error increases with the number of comparisons made.

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