Science examination year
| Value label | Value | Absolute frequency | Relative frequency |
|---|---|---|---|
| 2005 | 183 | 2.35% | |
| 2006 | 236 | 3.03% | |
| 2007 | 229 | 2.94% | |
| 2008 | 238 | 3.05% | |
| Missing | 6913 | 88.64% | |
| Total | 7799 | 100.00% |
NPD Variable
Science examination year
| Value label | Value | Absolute frequency | Relative frequency |
|---|---|---|---|
| 2005 | 183 | 2.35% | |
| 2006 | 236 | 3.03% | |
| 2007 | 229 | 2.94% | |
| 2008 | 238 | 3.05% | |
| Missing | 6913 | 88.64% | |
| Total | 7799 | 100.00% |
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