| Value | Category | Cases | |
|---|---|---|---|
| 1 | Correct answer | 2460 | 
                                                                 
                                    
                                    56%
                                 
                                                             | 
                                                        
                    
| 2 | Wrong answer | 887 | 
                                                                 
                                    
                                    20.2%
                                 
                                                             | 
                                                        
                    
| 8 | Don't know | 1032 | 
                                                                 
                                    
                                    23.5%
                                 
                                                             | 
                                                        
                    
| 9 | No answer | 12 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             |