z

N

Mean

Conf. (±)

Std. Error

Std. Dev.

0.0 to 0.5

120

38.1235

0.578568683

0.292191652

3.200799178

0.5 to 1.0

76

3.29763158

0.148926165

0.074758293

0.65172769

1.0 to 1.5

28

44.6478571

0.233356837

0.113731045

0.601808122

1.5 to 2.0

18

45.6505555

0.62841576

0.297853401

1.263684958

2.0 to 2.5

9

46.6894444

1.000358877

0.433806188

1.301418564

2.5 to 3.0

10

46.331

0.485711017

0.214711434

0.678977172

3.0 to 3.5

9

46.975

0.693006582

0.300522693

0.901568078

3.5 to 4.0

2

46.93

4.828358221

0.38

0.537401154

4.0 to 4.5

3

48.0166666

1.45068823

0.3371611353

0.583980593

4.5 to 5.0

1

46.74

-

-

-

Entire sample

276

41.7689492

0.476876166

0.242237842

4.02435727