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Distribution of Bells Test and test score averages by age.
| Age category | (14 and 15) | (16 and 17) | (18 and 19) | (20 and 21) | FICHER (P-value) | Sig. |
|---|---|---|---|---|---|---|
| Bells Test (MOY±ECART) (Min, Max) |
(a) 31.91±2.172 (26, 35) |
(b) 33.53±1.652 (28, 35) |
(b) 34.09±1.005 (31, 35) |
(b) 34.63±0.518 (34, 35) |
11.791 | 0.000 |
(a), (b), (c), (ab), and (bc) are groups of averages, *(min, max) is the minimum and maximum average values in the age category
