Table 6 Cronbach’s alpha scale
From: Rethinking self-reported measure in subjective evaluation of assistive technology
Cronbach’s alpha | Internal consistency |
|---|---|
α ≥ 0.9 | Excellent (high-stakes testing) |
0.7 ≤ α < 0.9 | Good (low-stakes testing) |
0.6 ≤ α < 0.7 | Acceptable |
0.5 ≤ α < 0.6 | Poor |
α < 0.5 | Unacceptable |