N

Range

Minimum

Maximum

Mean

Std. Deviation

NLS

217

2.94

−1.76

1.18

−0.0374

0.77210

TPK

217

6.12

0.41

6.53

3.3810

1.49408

PPB

217

4.00

0.53

4.53

2.9155

0.98033

PTT

217

3.93

0.93

4.87

3.1054

0.99648

Valid N (listwise)

217