Tukey's HSD
Post Hoc Test Formulas |

formula:

M = treatment/group mean n = number per treatment/group |

**Steps**

- Calculate an analysis of variance (e.g., One-way between-subjects ANOVA).
- Select two means and note the relevant variables (Means, Mean Square Within, and number per condition/group)
- Calculate Tukey's test for each mean comparison
- Check to see if Tukey's score is statistically significant with Tukey's
probability/critical value table taking into account appropriate df
_{within}and number of treatments.

- An example of the application of this formula
- Practice by creating your own data and then check your work with the Virtual Statistician Tukey Post-Hoc Calculator (will open in another window) (Only works with n = 8)
- A description of the Analysis of Variance and Tukey Post Hoc Test.