Code for Distribution-Free Procedures

• ex15_01.R (works problems from section 15.1)
  
• ex15_9.py (problem 15.9)
  
• ex15_02.R (works problems from section 15.2)
  
• ex15_03.R (works problems from section 15.3)
  
• ex15_supplementary_exercises.R (works the end of chapter problems)
  
• ex15_36.py (problem 15.36)
  
• wilcoxon_signed_rank_test.R (automates some of the steps in the Wilcoxon signed rank test)
  
• wilcoxon_rank_sum_test.R (automates some of the steps in the Wilcoxon rank-sum test)
  
• wilcoxon_signed_rank_interval.R (automates some of the steps in the Wilcoxon signed rank confidence interval)
  
• wilcoxon_rank_sum_interval.R (automates some of the steps in the Wilcoxon rank sum confidence interval)
  
• kruskal_wallis_test.R (implements the Kruskal Wallis test)
  
• friedmans_test.R (implements Friedman's test for a randomized block experiment)