Table 4.
Identified issues according to the 10 principles of Nielsen heuristic evaluation
| No. | Items | Totla number of identified problems (%) | Mean of severity ratings | Number of identified problems | Severity | ||||
|---|---|---|---|---|---|---|---|---|---|
| E. 1 | E. 2 | E. 3 | E. 4 | E. 5 | |||||
| 1 | Visibility of system status | 7 (10.29) | 0.4 | 2 | 2 | 2 | 0 | 1 | Without problem |
| 2 | Match between system and the real world | 6 (8.82) | 0.5 | 1 | 1 | 0 | 2 | 2 | Without problem |
| 3 | User control and flexibility | 8 (11.76) | 0.2 | 2 | 3 | 2 | 1 | 0 | Without problem |
| 4 | Consistency and standards | 9 (13.23) | 1.31 | 3 | 2 | 1 | 2 | 1 | Partial problem |
| 5 | Help to errors recognize and correction | 8 (11.76) | 2 | 4 | 0 | 1 | 1 | 2 | Minor problem |
| 6 | Error prevention | 5 (7.35) | 1.74 | 1 | 1 | 0 | 0 | 3 | Minor problem |
| 7 | Recognition rather than recall | 6 (8.82) | 1.56 | 1 | 2 | 1 | 1 | 1 | Partial problem |
| 8 | Flexibility and efficiency of use | 3 (4.41) | 0.4 | 2 | 1 | 0 | 0 | 0 | Without problem |
| 9 | Esthetic aspects and simple design | 3 (4.41) | 0.3 | 0 | 0 | 1 | 1 | 1 | Without problem |
| 10 | Help and documentation | 13 (19.11) | 2.9 | 3 | 3 | 4 | 2 | 1 | Major problem |
| Total | 68 (100) | 1.13 | 19 | 15 | 12 | 10 | 12 | Partial problem | |
Abbreviation: E, evaluator.