Table 2.
Sample classification situation.
| Satisfaction level | Number of samples | Evaluation results | |||
|---|---|---|---|---|---|
| A | B | C | D | ||
| A | 30 | 26 | 01 | 02 | 01 |
| B | 30 | 0 | 29 | 01 | 01 |
| C | 30 | 0 | 01 | 28 | 01 |
| D | 30 | 02 | 0 | 0 | 28 |
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