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Mean PAE's (percent absolute error) and SD of PAEs for the range of the respective number line task separated for the different age groups.
| Age group | Bounded task | Unbounded task | ||||
|---|---|---|---|---|---|---|
| M | SD | Range | M | SD | Range | |
| First grade | 22.8 | 11.6 | 0–10 | 15.0 | 7.6 | 0–20 |
| Second grade | 14.7 | 9.2 | 0–20 | 10.7 | 4.4 | 0–20 |
| Third grade | 6.4 | 2.8 | 0–100 | 13.8 | 6.6 | 0–20 |
| Fourth grade | 6.0 | 2.1 | 0–1000 | 11.9 | 6.1 | 0–20 |
| Adults | 3.3 | 1.1 | 0–10,000 | 10.0 | 5.7 | 0–20 |
