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

Exercise:
   Four different stimulations (A1, A2, A3, and A4) were applied to 10 subjects, and the subjects’ responses were compared between pre- and post-stimulation. The changes in response were quantified by subtracting pre-stimulation response from post-stimulation response in each subject, and the results are shown in the figure below.

   Analyze whether magnitudes of response are different depending on types of stimulation.