Ho: the data of normal distribution H
1
: the data of un normal distribution The criteria is Ho accepted if T
value
0.1590 and rejected if T
value
0.1590 with α =
5.
Based on Table 4.5, it can be seen that T
value
in experimental class is smaller than T
table
, with the closest Lilliefors critical value of 30 with degree of significance 0.05 which is T
value
T
table
0.0850 0.1590. In addition, T
value
in controlled class is smaller than T
table
, with the closest Lilliefors critical value of 30 with degree of significance 0.05 which is T
value
T
table
0.1105 0.1590. It shows that Null Hypothesis Ho is accepted and the data of post-test is normally distributed. The
whole description of Lilliefor Test calculation on the table above can be seen on the appendix.
3. Homogeneity Test of Pre-Test
The homogeneity test was used to find out whether the group sample which was taken from population is homogeneous or not. The following is the calculation of
homogeneity test of pre-test: Variance of Pre-Test of Experimental Class
S
2
=
∑
-
∑
= –
= 4 586.5 –67.16
2
= 4 586.5 – 4 510.46
= 76.04 Variance of Pre-Test of Controlled Class
S
2
=
∑
-
∑
= –
= 4 835.5 – 69.16
2
= 4 835.5 – 4 783.10
= 52.4 Homogeneity Test of Pre-Test
F
value
= =
= 1.45
Table 4.10 The Result of Homogeneity Pre-Test of Experimental and Controlled Class
No Class
Variance N
F
value
F
table
Criteria 1.
Experimental 76.04
30 1.45
1.85 Homogenous
2. Controlled
52.40 30
The following is the writer ’s assumption:
Ho : the data of homogenous variance H
1
: the data of un homogenous variance The criteria is Ho accepted if F
value
1.85 and rejected if F
value
1.85 with α = 5.
Based on Table 4.6, F
value
is smaller than F
table
, with the closest critical value of 29 with degree of significance 0.05 which is F
value
F
table
1.45 1.85. It shows Null Hypothesis Ho is accepted and the data of pre-test group sample was taken
from homogeneous population.
4. Homogeneity Test of Post-Test
The homogeneity test was used to find out whether the group sample which was taken from population is homogeneous or not. The following is the calculation of
homogeneity test of post-test:
