MANN-WHITNEY U-TEST                                                             
                                                                                
SAMPLE 1 :                                                                      
   SIZE? 4                                                                      
   DATA 1 ? 1.234                                                               
   DATA 2 ? 9.2342                                                              
   DATA 3 ? 7.2323                                                              
   DATA 4 ? 7.45645                                                             
                                                                                
SAMPLE 2 :                                                                      
   SIZE? 4                                                                      
   DATA 1 ? 9.234234                                                            
   DATA 2 ? 8.665455                                                            
   DATA 3 ? 6.293842                                                            
   DATA 4 ? 3.202345                                                            
                                                                                
                                                                                
FIRST SAMPLE PRECEEDING, U = 9                                                  
SECOND SAMPLE PRECEEDING, U = 7                                                 
