The lowest score of the post-test in experimental class is 65
Table 3.2 The score of individual students’ of the control class
No Name
Pre-test Post-test Gained Score
1 Abizier Suwandi
72 76
4 2
Ahmad Sururi 61
80 19
3 Anisa Ribut Septihana
59 70
11 4
Bagas Rifky Fadilla 80
84 4
5 Candra
70 70
6 Desi Ratnasari
65 75
10 7
Dewi Paramita K 45
50 5
8 Dwi Cahyo Utomo
78 80
2 9
Eva Noviyanti 65
75 10
10 Erlina Sulistia
70 75
5 11
Fahrul Hidayat 80
82 2
12 Gamma Ayu Fitria
67 67
13 Hellen Tania Anjeta
56 65
9 14
Hikmah Nurul 68
80 12
15 Ilham Wahyudin
69 69
16 Imam Karisma
50 70
20 17
Inayatul Al- Fi’ah
74 80
6 18
Indri Ismayanti 84
84 19
Maulana Hasanudin 80
88 8
20 Mispala Agustiyani
74 86
12 21
Olivia Ray Shinta Dewi 76
80 4
22 Riski Adi Prasetya
82 84
2 23
Uteri Ramadhani S. 70
72 2
24 Vivi Evianna Yolanda
40 60
20 25
Yesica Vera Novita A. 60
65 5
The highest score of the pre-test in control class is 84 The highest score of the post-test in control class is 88
The lowest score of the pre-test in control class is 40 The lowest score of the post-test in control class is 50
Table 3.3 The comparison of scores of each student of the experimental class and
control class No
Gained Score X1
Gained Score X2
X
1
X
2
X
1 2
X
2 2
1 7
4 -6
-2.88 36
8.29 2
16 19
3 12.12
9 146.9
3 6
11 -7
4.12 49
16.97 4
5 4
-8 -2.88
64 8.29
5 17
4 -6.88
16 47.33
6 4
10 -9
3.12 81
9.73 7
16 5
3 -1.88
9 3.53
8 2
-13 -4.88
169 23.81
9 8
10 -5
3.12 25
9.73 10
10 5
-3 -1.88
9 3.53
11 14
2 1
-4.88 1
23.81 12
10 -3
-6.88 9
47.33 13
15 9
2 2.12
4 4.49
14 20
12 7
5.12 49
26.21 15
27 14
-6.88 196
47.33 16
15 20
2 13.12
4 172.13
17 20
6 7
-0.88 49
0.774 18
7 -8
-6.88 64
47.33 19
6 8
-7 1.12
49 1.25
20 15
12 2
5.12 4
26.21 21
13 4
-2.88 8.29
22 18
2 5
-4.88 25
23.81 23
25 2
12 -4.88
144 23.81
24 20
20 7
13.12 49
172.13 25
13 5
-1.88 3.53
N = 25 ∑X1 =325
∑X2 =172 ∑X
1
= 0 ∑X
2
= 0 ∑X
1 2
= 1114 ∑X
2 2
= 906.5 M1 = ∑X1
M2 = ∑X2 N1
N2 = 325
= 172 25
25 = 13
= 6.88
t
o
=
M1-M2
{ x1²+ ∑x2²} { N1+N2}
N1+N2-2 {N1 x N2}
t
o
=
13 – 6.88
{1114 + 906 .5} {25 + 25} {25 + 25
– 2} {25 x 25}
t
o
=
6.22
2020 .5 { 50 } { 48 } { 625 }
t
o
=
6.22 42.1 {0.08 }
t
o
=
6.22 3.37
t
o
=
6.22 1.83
t
o
=
3.40 Determining t
table
in significant level 5 with df :
df = N1 + N2
– 2
= 25 + 25 – 2
= 48 There is no degree of freedom from 48, so the writer uses the closer df it
is 50. From the result of statistics calculation, it can be seen that the value of t
o
is 3.40 and the degree of freedom df is 50.
According to the table above, df at significant level of 5 is: 5 = t
o
: t
t
= 3.40 2.01 The comparison between t
observation
with t
table
t
o
= 3.40 2.01 It includes
that t
observation
t
o
is higher than t
table
t
t
.
3. The Test of Hypotheses
The writer states the hypothesis as follows: H
a
Experiment Hypothesis = “There is a significant difference of students’
achievement between those who had been taught reading comprehension through small
group discussion compared to those who had been taught reading comprehension without
small group discussion .”
H
o
Null Hypothesis =
“There is no significant difference of students’ achievement between those who
had been taught reading comprehension through small group discussion compared to
those who had been taught
Note :
If t
o
t
t
: There is significant difference and the alternative hypothesis Ha is accepted.
If t
o
t
t
: There is no significant difference and the alternative
hypothesis Ha is rejected, the null hypothesis is accepted.
The hypothesis criterion states that: if t
o
t
t
= H
a
is accepted and H
o
is rejected. And if t
o
t
t
= H
a
is rejected and H
o
is accepted. H
a
is the alternative hypothesis, H
o
is the null hypothesis, t
o
is t observation, and t
t
is t table.
From the result of the statistic calculation which have been done previously, it was obtained the value of t
o
= 3.40. This value is bigger than t
t
at degree of freedom df 5 = 2,01, so the alternative hypothesis H
a
is accepted and the null hypothesis H
o
is rejected.
4. The Data Interpretation
The test of hypothesis shows that the students of experiment class who learnt reading comprehension through small group discussion got higher scores
than students of controlled class who learnt reading comprehension through explanation method.
The findings as described are supported by those enumeration obtained from the observation of writing during experiment. There are some factors it is
causing the improvement of student’s reading comprehension such as
- Students get easy to understand the meaning to each sentences in the text by sharing each other to their friend in a group.
- Students more active during teaching and learning process, by doing some discussion in a class.
- The discussion has been exercised the students to be confident to share what on their mind.
- Students are motivated because the teaching and learning process is enjoyable.
Based on the analysis of the previous calculation result, it can be observed that teaching reading comprehension through small group discussion is more
effective and applicable for 8
th
grade students of SMP Negeri 18 Tangerang.
36
CHAPTER IV CONCLUSION AND SUGGESTIONS
In this chapter, the writer tries to give the conclusion and suggestions based on the research findings that had been gained after conducting the research.
A. Conclusions
Based on the result of data calculation on the previous chapter, can be drawn a conclusion that there is a significant difference between students’
achievement in reading comprehension. The students of experiment class whom had been taught reading comprehension through small group discussion gained
better average score. It also can be proved through the comparison of t
test
and t
table
which had been obtained through statistical calculation.
The use of small group discussion in teaching reading comprehension had helped both the teacher and the students as well. Small group discussion enabled
the students to understand the texts by discussed on a group. It also help the teacher to make a good teaching and learning process in the class, because each
students have a role and more active in the group, to make their own comment about solving the problem on their group in order to answer the questions and
make thing done.
