|
|
| frequency | percent | Valid percent | Cumulative percent |
| Valid | 21 - 30 | 16 | 9.3 | 29.1 | 29.1 |
| 31 - 40 | 7 | 4.1 | 12.7 | 41.8 | |
| 41 - 50 | 15 | 8.7 | 27.3 | 69.1 | |
| Over 50 | 17 | 9.9 | 30.9 | 100.0 | |
| total | 55 | 32.0 | 100.0 |
| |
| Missing | System | 117 | 68.0 |
|
|
| Total |
| 172 | 100.0 |
|
|