N

Mean

Std.

Deviation

Std.

Error

95% Confidence Interval for Mean

Lower Bound

Upper Bound

Capability

135

3.73

1.57

0.12

3.50

3.96

Concept

152

3.33

1.89

0.13

3.08

3.58

Total

287

3.52

1.74

0.09

3.33

3.67