Evaluation and Analysis of English Teaching Ability Based on Nonlinear Random Matrix Model

Table 4

Credibility reference table.

Reliability	Cronbach coefficient
Untrusted	Cronbach coefficient ＜  0.3
Barely credible	0.3 ≤ Cronbach coefficient ＜  0.4
Credible	0.4 ≤ Cronbach coefficient ＜ 0.5
Very believable	0.5 ≤ Cronbach coefficient ＜ 0.7
Very credible (less common)	0.7 ≤ Cronbach coefficient ＜ 0.9
Very credible	0.9 ≤ Cronbach coefficient