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Table 3 ISONORM 9241/110-S evaluation (n=40, range from 1 (very bad) to 7 (very good))

From: Ensuring usability of future smart energy control room systems

Factor

Aspect

Mean

SD

Median

Sum

Suitability for tasks

Integrity

5.1

1.19

6.0

16.3

 

Streamlining

5.5

1.18

6.0

 
 

Fitting

5.7

0.85

6.0

 

Self-descriptiveness

Information content

5.3

1.14

6.0

14

 

Potential support

4.5

1.41

5.0

 
 

Automatic support

4.2

1.66

4.0

 

Conformity with user expectations

Layout conformity

5.7

1.21

6.0

16.8

 

Transparency

5.3

1.37

5.5

 
 

Operation conformity

5.8

1.12

6.0

 

Suitability for learning

Learnability

4.0

1.47

4.0

11.7

 

Visibility

4.1

1.53

4.0

 
 

Deductibility

3.7

1.52

4.0

 

Controllability

Flexibility

5.3

1.33

5.5

16.6

 

Changeability

5.7

1.23

6.0

 
 

Continuity

5.6

1.53

6.0

 

Error tolerance

Comprehensibility

5.0

1.30

5.0

14.2

 

Correct ability

5.0

1.12

5.0

 
 

Correction support

4.2

1.51

4.0

 

Suitability for individualisation

Extensibility

3.8

1.85

4.0

13

 

Personalisation

4.6

1.91

5.0

 
 

Flexibility

4.6

1.81

5.0