Table 4 Descriptive statistics about the usability and its sub-factors
From: Reusable content matters: a learning object authoring tool for smart learning environments
Sub-factors | N | Mean | Standard Deviation | Min | Max |
|---|---|---|---|---|---|
Visual Sufficiency and Stability | 20 | 2.55 | .30 | 1 | 3 |
Error Messages and Technical Sufficiency | 20 | 2.42 | .55 | 1 | 3 |
Interface-Task Performance | 20 | 1.45 | .45 | 1 | 3 |
Interface-Process Performance | 20 | 1.29 | .21 | 1 | 3 |