Category

Cronbach’s Alpha is based on standardized items

Number of items

I

Excellent

[0.9 - 0.8]

II

Good

[0.8 - 0.7]

III

Medium

[0.7 - 0.6]

IV

Qualified

[0.6 - 0.8]

V

Unqualified

[0.5 - 0.0]