Evaluation - Advances in Personalized Web-Based Education - page 106

Did the educational software help you in the
elaboration of tasks and activities
considering your studies?

Did the educational software help you to
understand better other lessons of computer
science?

Did the educational software help you in
your studies?

Did the educational software help you to
learn other programming languages?

Did the educational software help you to
understand better the logic of programming?

0 1 2 3 4 5

Fig. 4.10 Learners' answers about the results of the e-learning program to their further studies

Table 4.6 Descriptive
statistics

Group Mean Std. deviation N

Grade_on_
lesson1

Group A 8.4286 1.00837 35

7.3714 1.16533 35

Group B

Group C 7.2857 1.17752 35

7.6952 1.22572 105

Total

Group A 7.5714 0.85011 35

Grade_on_
lesson2

6.6571 0.96841 35

Group B

Group C 6.6857 0.96319 35

Total 6.9714 1.01391 105

the performance of the students, who used the presented web-based tutoring system
(group A), is better than the other students. Actually, their performance is better
even in lesson of 'digital signal processing of speech and audio', which does not
concern computer programming directly.
The homogeneity of covariances and the homogeneity of variances have
to be checked to ensure that the different averages scores were not occurred by
chance or due to differences on the group's populations. MANOVA checks
the homogeneity of covariances conducting the “Box's test of equality of
covariance”. If the “Sig.” value is less than 0.001, then the assumption of
homogeneity of covariances is violated. In the particular experiment, that value is
0.344 (Table 4.7 ). Therefore, there is homogeneity of covariances. Furthermore,
MANOVA checks the homogeneity of variances conducting the “Levene's test