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HOME-STUDY DRIVER EDUCATION

# Table 4

Mean Exit Exam Knowledge Score (M), Standard Deviation (SD), and Sample Size (n) for Each Driver Education Instruction Method by Statistical Comparison

comparison

M

Overall

27.57

Correctly assigned

27.86

Driver training

28.12

No driver trainin

g 27.72

Computer

28.41

No computer

26.90

SD

n

M

SD

n

M

SD

n

M

SD

n

4.13

305

29.22

4.14

114

29.42

4.36

412

28.01

4.65

490

4.16

198

29.25

4.19

101

29.36

4.38

363

27.82

4.65

418

4.08

68

29.14

4.62

50

30.52

3.66

126

28.14

3.96

118

4.21

130

29.35

3.77

51

28.59

4.59

227

27.63

4.92

292

4.09

71

29.40

3.77

45

28.59

4.59

227

27.92

4.72

154

4.23

59

29.00

. 4 05

6

27.31

5.13

138

Statistical

Workbook

Classroom

Driver education instruction method

PEN

CD-ROM

35

## CD-ROM

Workbook

30

MEAN EXIT EXAM KNOWLEDGE SCORE

25

20

15

10

5

0

Overall

Correct

Driver

assignment

training

No driver training

STATISTICAL COMPARISON

Computer

No computer

Figure 1. Mean exit exam knowledge scores by instruction method for each comparison.

Table 5 Comparisons of Home-Study Instruction Methods and Classroom

# Instruction on Exit Exam Knowledge Results

Overalla

3, 1317

19.37

13.59*

.03

+1.65*

+1.85*

Correctly assigneda

3, 1076

19.62

10.17*

.03

+1.39†

+1.50*

Driver trainingb

3, 358

15.85

9.07*

.07

+1.02

+2.41*

No driver training

3, 696

21.27

3.42*

.02

+1.63

+0.87

Computer

3, 493

20.22

1.47

.01

+0.99

+0.19

No computer

2, 200

23.67

0.55

.01

+2.10

Statistical comparison

dfb, dfw

Mean difference (MHome-Study

PEN

CD-ROM

η2

F

AN MSE

OVA

) Workbook – MClassroom

+0.43

• -

0.04

+0.02

• -

0.09

• -

0.49

+0.41

aPEN and CD-ROM were significantly better than the workbook. bCD-ROM is significantly better than the workbook. *p < .05. †p < .10 (trend).

23

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