Multiple Comparisons (Bonferroni & Tukey HSD) with Confidence Intervals
Zaiontz’s Method for Multiple Comparisons

Exercise:
Seasonal changes in blood concentration of substance H were investigated in 4 normal newborn babies. Analyze whether there are individual and seasonal differences in substance H blood concentration.

(A1: spring, A2: summer, A3: fall, A4: winter)

Comparative Verification Test

P-value (Factor A): StatFinale, 0.000119; SPSS, 0.000; EZR, 0.000119.
P-value (Factor B): StatFinale, 0.238853; SPSS, 0.239; EZR, 0.238853.
Tukey’s Additivity Test (StatFinale only): P-value = 0.386743
Multiple comparisons and confidence intervals (CIs): Exact match
Multiple C & CIs (Bonferroni & Tukey HSD): StatFinale & SPSS
Multiple C & CIs (Zaiontz): StatFinale

Reports of SPSS & EZR