Table 3.
Ranking of test results before and after the experiment.
| Levels | Score range | Classification |
|---|---|---|
| Level 1 | [0; 16] | Poor |
| Level 2 | (16; 32] | Weak |
| Level 3 | (32; 48] | Medium |
| Level 4 | (48; 64] | Good |
| Level 5 | (64; 80] | Very good |
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