The following table contained the result of homogeneity from pre-test score between experimental and controlled class and followed by the result of
homogeneity from post-test score between experimental and controlled class.
Table 4.5 Homogeneity of Pre-test Results between Experimental and Controlled Class
Test of Homogeneity of Variances
nilaites Levene Statistic
df1 df2
Sig. ,307
1 38
,583
Table 4.6 Homogeneity of Post-test Results between Experimental and Controlled
Class
Test of Homogeneity of Variances
nilaites Levene Statistic
df1 df2
Sig. ,607
1 38
,441
From the result of the Levene Statistic Test above, it could be seen that the significance of the data from experimental and controlled class pre-test score is
0.583 and the post-test is 0.441. It means the significance of the data is higher than the significance degree
α = 0.05. The result of homogeneity tests shows that pre-test and post-test between experimental and controlled class had homogeneity
distribution and can be tested using t-test.
3. Hypothesis Test t-test
In this part, the researcher calculated the data to test the hypothesis that whether there is significant
difference between the students’ writing of descriptive text by
using dictogloss technique in experimental class and the students’ writing of descriptive text without using dictogloss technique in control class. The
researcher calculated the data using t-test formula. Two classes were compared,
the experimental class was X variable and the control class was Y variable.
The table below is the statistical calculation of the gained score from both experimental class taught by dictogloss technique and control class without
dictogloss technique.
Table 4.7 The Statistical Calculation of the Gained Score of Both the
Experimental Class and the Control Class Students
X Y
x=X-Mx y=Y-My
x
2
y
2
1 8
10 -1.70
6.25 2.89
39.06 2
12 3
2.30 - 0.75
5.29 0.56
3 -2
-1 -11.70
- 4.75 136.89
22.56 4
11 7
1.30 3.25
1.69 10.56
5 13
9 3.30
5.25 10.89
27.56 6
14 11
4.30 7.25
18.49 52.56
7 12
5 2.30
1.25 5.29
1.56 8
9 7
-0.70 2.25
0.49 5.06
9 9
9 -0.70
5.25 0.49
27.56 10
9 2
-0.70 -1.75
0.49 3.06
11 -7
-7 -16.70
-10.75 278.89
115.56 12
14 13
4.30 9.25
18.49 85.56
13 8
5 -1.70
1.25 2.89
1.56 14
11 -2
1.30 -5.75
1.69 33.06
15 15
-8 5.30
-11.75 28.09
138.06 16
8 -4
-1.70 -7.75
2.89 60.06
17 13
3 3.30
-0.75 10.89
0.56 18
12 3
2.30 -0.75
5.29 0.56
19 9
6 -0.70
2.25 0.49
5.06 20
16 4
6.30 0.25
39.69 0.06
Total
194 75
-1 572.20
630.02
Average 9.70
3.75 The table above describes the result of the calculation of the gained score
of the experimental class X and the controlled class Y. Based on the table above, the total gained score of the experimental class
is 311 and the control class
is 121. It means the total gained score of experimental class is higher than those of controlled class.
