code: def execute(self):
      self.general_analysis()
      if self.method.lower() == "wilcoxon":
          self.wilcoxon()
      elif self.method.lower() == "ttest":
          self.ttest()
      else:
          print("Error: Method Invalid!")
  
file_path: CaseRecommender/caserec/evaluation/statistical_analysis.py
imports: from scipy.stats import ttest_ind, ranksums
  import numpy
label_desc: Use image node_id 5 for calling the StatisticalAnalysis obj's underlying member method code with example usage: obj.execute() without return types