Virtual Statistician: Tukey's HSD

Tukey's HSD
Post Hoc Test Formulas

description |example | calculator (will open in new window)

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.