|
| Characteristics and attributes | JIRA v.1 | JIRA v.1.1 |
| EI | P/G I | EI | P/G I |
|
| 1. Actual Usability | | 53.3% | | 67.0% |
| 1.1. Effectiveness in use | | 73.2% | | 86.7% |
| 1.1.1. Subtask correctness | 86.4% | | 91.9% | |
| 1.1.2. Subtask completeness | 87.9% | | 95.5% | |
| 1.1.3. Task successfulness | 45.5% | | 72.7% | |
| 1.2. Efficiency in use | | 29.3% | | 42.8% |
| 1.2.1. Subtask correctness efficiency | 37.4% | | 44.3% | |
| 1.2.2. Subtask completeness efficiency | 37.5% | | 47.3% | |
| 1.2.3. Task successfulness efficiency | 13.1% | | 36.8% | |
| 1.3. Learnability in use | | 57.3% | | 71.6% |
| 1.3.1. Subtask correctness learnability | 78.8% | | 75.1% | |
| 1.3.2. Subtask completeness learnability | 26.4% | | 77.3% | |
| 1.3.3. Task successfulness learnability | 66.7% | | 62.5% | |
|