| academically | 58 | degree |
| extremely | 36 | degree |
| very | 23 | degree |
| course → be → rigorous | 373 |
| course → be designed to be → rigorous | 17 |
| negative | neutral | positive |
| 0.052 | 0.500 | 0.448 |
| Raw frequency | 390 |
| Normalized frequency | 0.597 |
| Modifier score | 0.950 |
| Perplexity | 181.133 |