e. Determining Standard Error of Mean Variable X:
SE
M1
=
√
f. Determining Standard Error of Mean Variable Y: SE
M2
=
√
g. Determining Standard Error of difference of Mean Variable X and Mean Variable Y:
SE
M1 - M2
= √
h. Determining t
o
with formula:
t
o
=
i. Determaining t
table
on significance degree 5, on degrees of freedom: df = N
1
+ N
2
- 2
H. Statistical Hypothesis
The statistical hypothesis states as below. 1. Null Hypothesis Ho= It means there is no
significant difference of students’ reading comprehension achievement of exposition text between students who
are taught through blended learning and students who are taught without blended learning.
2. Alternative Hypothesis H
a
= It means there is a significant difference of
students’ reading comprehension achievement of exposition text between students who are taught through blended learning and students who are taught
without blended learning.
The criteria to prove the hypothesis as the follow: 1. If t
t
value
t
t
t
table
H is rejected and H
a
is accepted in significance degree 5, or in SPSS if
p α or sig 2-tailed is smaller than alpha 0.05. 2. If t
t
value
t
t
t
table
Null hyphotesis, H is accepted in significance degree 5
or in SPSS if p α or sig 2-tailed is greater than alpha 0.05.
Moreover, the degree of freedom in this study: df =
N
1
+ N
2
– 2 = 30+30 -2
= 60-2 = 58
The t
table
with degree of freedom 58 and significant level 5 was 1,672.
32
CHAPTER IV FINDING AND DISCUSSION
This chapter shows the result of this study. It consists of description of the data, preliminary analysis, data analysis, hypothesis testing, and discussion.
A. Description of the Data
The main instrument of this research is test. The test was administered in beginning and the end of the research. It was conducted to both classes which
were experimental class XI IPS 2 and controlled class XI IPS 3 each class consists of 30 students. Furthermore, the result of the test would be described
below.
1. Students’ Score in Pre-test
The data presented below is the result of pre-tests in both experimental class and controlled class.
Table 4.1 The Score of Pre-test
Score Experimental Class
Controlled Class Frequency
F Mean
Frequency F
Mean
30 1
3.3
59.93 54.93
31-40 2
6.6 5
16.7 41-50
6 20
6 20
51-60 5
16.7 11
36.7 61-70
9 30
4 13.3
71-80 5
16.7 4
13.3 80
2 6.6
∑
30 100
30 100
From the table above it could be seen that student who got score 30 consists of 1 student in experimental class and 0 in controlled class, student who got this result
had extremely poor reading comprehension. Furthermore, the most frequent
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
