Descriptive indices

variables

mean

standard deviation

variance

skewness

St.d of skewness

skurtosi

St.d of skewness

academic achievement

17.51

1.79

3.21

−1.00

0.108

0.654

0.215

academic engagement

107.88

13.46

181.18

−0.48

0.108

0.270

0.215

neuroticism

17.25

5.82

33.90

−0.13

0.108

−0.422

0.216

extraversion

22.04

4.86

23.45

−0.36

0.108

0.105

0.215

openness

11.35

2.83

7.99

−0.655

0.108

0.553

0.215

agreeableness

12.06

4.22

17.80

−0.135

0.108

0.059

0.216

conscientiousness

33.84

6.99

48.80

−0.466

0.108

−0.163

0.215

PSCC

15.22

2.64

6.98

−0.544

0.108

0.359

0.215