D. Result of Data Analysis
1. Fulfillment of the Assumptions
a. Result of Normality Test
The normality test is used to measure whether the data in both control class and experimental class are normally distributed or not. In this case, the writer used
Lilliefors formula to test the normality of the data. The hypotheses for normality test formulated as follows:
H
a
= the data have normal distribution H
o
= the data do not have normal distribution The test criteria:
H
a
is accepted if L
observed
≤ L
critical
, it means that the data are in normal distribution.
H
o
is accepted if L
observed
≥ L
critical
, it means that the data are not in normal distribution.
Table 13 Normality Test of the Experimental Class and Control Class
Class Pre-test
Post-test Conclusion
L
observed
L
critical
L
observed
L
critical
Control 0.148311
0.195 0.091526
0.195 Normal
Experimental 0.144154
0.190 0.112391
0.190 Normal
Based on the table above, it can be seen that in experimental class and control class showed that L
observed
L
critical
. The writer concluded that the data in both classes were normally distributed For more information see appendices14, 15,
16 and 17.
b. Result of Homogeneity Test
Homogeneity test is used to determine whether the data obtained from the sample homogenous or not.
The hypotheses are: H
o
: the variance of the data is homogenous H
a
: the variance of the data is not homogenous The criteria of the test are as follows:
H
o
is accepted if F
observed
≤ F
critical
it means that the variance of the data is homogenous.
H
a
is rejected if F
observed
≥ F
critical
it means that the variance of the data is heterogeneous.
To measure the homogeneity test of control class, the writer used the formula as follows:
�
observed
= the biggest variants
The smallest variants
The result of homogeneity test is: 1
Pre-test of Experimental class and Control class Variance S
2
of pre-test control class: 21.7193
Variance S
2
of pre-test experimental class: 20.6044 F
observed
=
21.7193 20.6044
=1.0541
Table 12 Homogeneity Test Result in Pre-test Control Class and Experimental Class
Class Variance
F
observed
F
critical
Conclusion
Control 21.7193
1.0541 2.08
Homogenous Experimental
20.6044 2
Post-test of Experimental and Control class Variance S
2
of the post-test control class: 17.7222 Variance S
2
of post-test experimental class: 11.5568 F
observed
=
17.7222 11.5568
= 1.53349
Table 13 Homogeneity Test Result in Post-test Control Class and Experimental Class
Class Variance
F
observed
F
critical
Conclusion
Control 17.7222
1.53349 2.08
Homogenous Experimental
11.5568
Based on the table above, it can be seen at the result of the test in pre-test and post-test are 1.0541 and 1.53349 while the F
critical
at the significant level of 0.05 is 2.08. It proved that Ho is accepted because F
observed
≤ F
critical
. It means that the variance of the data was homogeneous See appendices 18 and 19.
c. The Result of Hypothetical Test
Kategori