| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 1 | Very easy | 175 | 
                                                                 
                                    
                                    14.6%
                                 
                                                             | 
                                                        
                    
| 2 | Easy | 361 | 
                                                                 
                                    
                                    30.1%
                                 
                                                             | 
                                                        
                    
| 3 | Difficult | 202 | 
                                                                 
                                    
                                    16.8%
                                 
                                                             | 
                                                        
                    
| 4 | Very Difficult | 117 | 
                                                                 
                                    
                                    9.8%
                                 
                                                             | 
                                                        
                    
| 7 | Not Applicable | 345 | 
                                                                 
                                    
                                    28.8%
                                 
                                                             | 
                                                        
                    
| 8 | Refused | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 9 | Don't Know | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             |