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Table 3 p notation represent individual participants ratings

From: Architecture and usability of OntoKeeper, an ontology evaluation tool

SUS Items p 1 p 2 p 3 p 4 p 5 μ(σ)
I think that I would like to use this system frequently 4 5 5 5 5 4.8 (0.45)
I found the system unnecessarily complex 1 1 1 1 1 1 (0)
I thought the system was easy to use. 5 5 3 5 5 4.6 (0.89)
I think that I would need the support of a technical person to be able to use this system. 2 5 1 1 1 2 (1.73)
I found the various functions in this system were well integrated. 5 5 5 5 5 5 (0)
I thought there was too much inconsistency in this system. 1 1 1 1 1 1 (0)
I would imagine that most people would learn to use this system very quickly 5 5 5 4 5 4.8 (0.45)
I found the system very cumbersome to use. 1 1 1 1 1 1 (0)
I felt very confident using the system. 5 5 5 5 5 5 (0)
I needed to learn a lot of things before I could get going with this system. 2 1 4 1 1 1.8 (1.30)
SUS Calculated Score 92.5 90 87.5 97.5 100  
  1. Values in parentheses are the standard deviation.Values derived from Likert scale (1=strongly disagreed, 5=strongly agreed)