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Comparison of IQ grades between two age groups (Overall)
| IQ Grade | 6-8 Yrs (n=161) | 9-11 Yrs (n=268) | Total (n=429) | |||
|---|---|---|---|---|---|---|
| No. | % | No. | % | No. | % | |
| Grade 1 | 0 | 0.0 | 6 | 2.2 | 6 | 1.4 |
| Grade 2 | 68 | 42.2 | 128 | 47.8 | 196 | 45.7 |
| Grade 3 | 67 | 41.6 | 106 | 39.6 | 173 | 40.3 |
| Grade 4 | 13 | 8.1 | 17 | 6.3 | 30 | 7.0 |
| Grade 5 | 13 | 8.1 | 11 | 4.1 | 24 | 5.6 |
