Evaluation - Advances in Personalized Web-Based Education - page 113

Did the returns to a previous domain concept
for revision help you to learn computer
programming better?

Were the returns to already learned concepts
meaningful?

Did the returns to a previous domain concept
correspond to your need for revision?

Did the prompt for revision was useful and
appropriate?

How many times the returns to a previous
read concept for revision concerned
concepts that you actually knew?

Were the returns to a previous learned
concept for revision a waste of time?

0 1 2 3 4 5

Fig. 4.14 Learners' answers about about the appropriateness or necessity of the returns to a
domain concept for revision

Table 4.17 Mean values of performance
Group

N Mean Std. deviation Std. error

mean

Performance Group A 35 90.1463 3.78963 0.64056

Group B 35 82.7143 5.30023 0.89590

Table 4.18 Independent samples test for performance
Levene's test
for equality of
variances

t-test for equality of means

F Sig. t df Sig.

(2-tailed)

Mean
difference

Std. error
difference

Equal
variances
assumed

2.676 0.106 6.748 68 0.000 7.43200 1.10135

Performance

Equal vari-
ances not
assumed

6.748 61.56 0.000 7.43200 1.10135