Understanding different statistical tests, their applications, and interpretations
What is Tukey's HSD test?
A post-hoc test that compares all possible pairs of group means while controlling the family-wise error rate.
Example: After ANOVA shows significant difference among 4 treatments, Tukey's HSD identifies which specific pairs differ
Note: Use only after significant ANOVA; controls Type I error across all comparisons; assumes equal group sizes (or use Tukey-Kramer for unequal n)
