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Table 8 Item-total statistics. Source: the authors

From: Usability evaluation model of an application with emphasis on collaborative security: an approach from social dimensions

Question Cronbach’s alpha if the item is deleted Question Cronbach’s alpha if the item is deleted
Q1 0.862 Q12 0.855
Q2 0.854 Q13 0.852
Q3 0.871 Q14 0.861
Q4 0.855 Q15 0.859
Q5 0.858 Q16 0.866
Q6 0.855 Q17 0.860
Q7 0.866 Q18 0.860
Q8 0.856 Q19 0.856
Q9 0.861 Q20 0.864
Q10 0.865 Q21 0.863
Q11 0.859