NPar Tests
Notes

 Output Created                           05-AUG-2026 12:35:13                  
 Comments                                                                       
 Input     Data                           D:\opencode\spss-studio-mcp\examples\ 
                                          data\experiment_study.sav             
           Filter                         <none>                                
           Weight                         <none>                                
           Split File                     <none>                                
           N of Rows in Working Data File 120                                   
 Syntax                                   NPAR TESTS /WILCOXON=pretest WITH     
                                          posttest (PAIRED).                    
                                                                                
 Resources Processor Time                 00:00:00.02                           
           Elapsed Time                   00:00:00.02                           
           Number of Cases Allowed(a)     449389                                
a Based on availability of workspace memory.

Wilcoxon Signed Ranks Test
Ranks

                             N      Mean Rank Sum of Ranks 
 后测成绩 Negative Ranks 16(a)  17.84     285.50       
 -            Positive Ranks 101(b) 65.52     6617.50      
 前测成绩 Ties           3(c)                          
              Total          120                           
a 后测成绩 < 前测成绩
b 后测成绩 > 前测成绩
c 后测成绩 = 前测成绩

Test Statistics(a)

                        后测成绩 - 前测成绩 
 Z                      -8.614(b)                   
 Asymp. Sig. (2-tailed) .000                        
a Wilcoxon Signed Ranks Test
b Based on negative ranks.

