scores which the students got in experimental class appeared to be in range of 61- 70 which consist of 9 students 30. While in controlled class the most frequent
score appeared to be in range of 51-60 which consist of 11 students 36,7. Then students who had score above 80 consist of 2 students in experimental class and 0
in controlled class, students who had score 80 had above average of reading comprehension. Students mean score in experimental class was 59.93 and students
mean score in controlled class was 54.93, so the difference between them was 5. The lowest score in experimental class was 28 and the highest was 84, while the
lowest score in controlled class was 32 and the highest 80. More detail of students scores and calculation were attached in the appendix.
2. Students
’ score in Post-test
The data presented below is the result of post-test in experimental class and controlled class.
Table 4.2 The Score of Post-test
Score Experimental Class
Controlled Class Frequency
F Mean
Frequency F
Mean
30
72.87 68.27
31-40 41-50
1 3.3
1 3.3
51-60 4
13.3 8
26.7 61-70
8 26.7
6 20
71-80 9
30 13
43.3 80
8 26.7
2 6.7
∑
30 100
30 100
From the table above it could be seen that the lowest range score stated in range 41-50 consist of 1 3.3 student in each class. If compared with pre-test,
there was improvement of student lowest score which was 30 in pre-test. Furthermore, the most frequent score appeared in the range of 71-80 in both
classes. The experimental class consists of 9 30 students and more in controlled class consists of 13 43.3 students. Then students who got score 80
consist of 8 26.7 in experimental class and 2 6,7 in controlled class. There was also improvement of mean score in both classes. In experimental class the
mean score was 72.87 and 68.27 in controlled class, then difference of mean score between them was 4.6, it was 0.4 smaller than in pre-test which was 5. Then the
highest post-test score in experimental class was 90 and the lowest score was 48. While in controlled class the highest score also 90 and the lowest score 44. More
detail of post-test scores and calculation were attached in the appendix.
3. Student
s’ Gained Score
The data presented below is the result of students’ gained scores in
experimental class and controlled class.
Table 4.3 The Gained Score
Score Experimental Class
Controlled Class Frequency
F Mean
Frequency F
Mean
1 3.3
14.27 12.67
0-10 8
26.7 13
43.3 11-20
16 53.3
12 40
21-30 4
13.3 4
13.3 31-40
1 3.3
∑ 30
100 30
100
From the table above it could be seen that there was a student in experimental class who had gained score 0; whereas in controlled class there was
no student who had gained score 0, but the lowest gained score was in range of 0-10 which consist of 13 43.3 students. Furthermore, the most gained score
frequent in range 11-20 in experimental class, which consist of 16 53.3 students, then 13 43.3 students in controlled class. The highest range gained
score appeared in range 31-40 consist of 1 student in experimental class.
However, in controlled class 4 13.3 students in range 21-30 who had highest gained score. Then the mean score of experimental class was 14,27 while the
controlled class was 12.67, the difference between the mean score was 1.6. The highest gained score in experimental class was 32 and the lowest gained score was
-8. While in controlled class the highest gained score was 24 and the lowest was 0. More details of students gained score and calculation were attached in the
appendix.
B. Preliminary Analysis
Before doing data testing t-test preliminary analysis should be done. The preliminary analysis consisted normality test and homogeneity test. This
preliminary analysis was done in order to see whether the data was normally distributed or not and homogenous or not. In order to find the normality and the
homogeneity of the data, the writer used IBM SPSS Statistics 22.
1. Normality test
a. Pre-test Normality Test
Table 4.4
Tests of Normality
Class Kolmogorov-Smirnov
a
Shapiro-Wilk Statistic
df Sig.
Statistic df
Sig. Pretest
Eksperiment .153
30 .072
.958 30
.280 Control
.101 30
.200 .962
30 .343
. This is a lower bound of the true significance. a. Lilliefors Significance Correction
The normality test used Kolmogorov-Smirnov. Based on critical points table Kolmogrov-Smirnov see appendix
, if N was 30 and α was 0.05, then the t
table
was 0.242. As could be seen on table 4.4 that t
value
of experimental class was 0.153 while the t
value
of controlled class was 0.101. If the t
value
was smaller than t
table
t
value
t
table
, the data was normally distributed. If it was not, the data was not normally distributed. From the table 4.4 above t
value
experimental class was smaller than t
table
0.1530.242 and t
value
of controlled class also smaller than t
table
