Cronbach’s alpha

Coefficient

Interpretation of Cronbach’s alpha Coefficient

≥0.9

The internal consistency of the scale is high,

0.7 ≤ α < 0.9

The scale has internal consistency,

0.6 ≤ α < 0.7

The internal consistency of the scale is acceptable,

0.5 ≤ α < 0.6

The internal consistency of the scale is weak,

α < 0.5

The scale has no internal consistency.