Number

Average score

Standard deviation

16

87

3.86

0.721

17

87

3.86

0.912

18

87

3.81

0.942

19

87

3.91

0.810

20

87

3.73

0.786

21

87

3.70

0.810

22

87

3.72

0.766

Average score

87

3.79

0.821