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. Author manuscript; available in PMC: 2015 Nov 24.
Published in final edited form as: J Usability Stud. 2007 Feb;2(2):76–95.

Table 2.

Accuracy in Completing the Usability Tasks by Round

Answers
(number of correct)

Round 1 2 3 4 5
Question
1
0 3 3 3 3
Question
2
1 2 3 2 3
Question
3
0 0 1 2 2
Question
4
0 3 2 3 3
Question
5
1 3 2 3 2

Success
Rate
2/
15
11/
15
11/
15
13/
15
13/
15

Success rate is the number of correct answers divided by 15, which is the number of possible correct answers in a round (3 participants x 5 questions)