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Journal of the Brazilian Computer Society

Table 9 Cronbach alpha in levels. Source: the authors

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

Level

N2

N3

N4

Cronbach’s alpha

0.606

0.797

0.653

Average

4.386

4.318

4.039

Variance

0.568

0.572

1.061

N of Items

4

9

7

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