a o
a W
p
6 t
g a
e c
t a
From t and the cont
of the pretes average scor
While, on th posttest was
The av 67 and the c
the experime given.
The achievement
In add experimenta
concluded th than the con
achievement It cou
10 20
30 40
50 60
70 80
Exp
the chart ab trol group co
st was 62, 67 re between
he control g 68, 56. The
verage score control grou
ental and con result sho
t between th dition, the
al group wa he mean of
ntrol group. T t between th
uld be conclu
perimental Group
62.67 75,78
Level of st
ove, the diff ould be seen
7 and the po pretest and
roup, the av e different av
es of the pre up was 60, 5
ntrol group w wed that t
he experim en
average sco as 75, 78 an
post test ac The result sh
he experimen uded that the
Control Group
60.53 68.56
Chart 4.3 udent’s ach
ferent averag . On the exp
osttest 75, 7 posttest on t
verage score verage score
e-test betwee 53. It meant
was relativel there was n
ntal group an ores of the
nd the contr hieved by th
howed that th ntal and cont
ere was good
hievement
ge score bet perimental gr
8. From tho the experime
of the prete between tho
en the exper that the stu
ly same befo no significa
nd the contro e post-test w
rol group w he experime
here was a s trol group on
d improveme tween the ex
roup, the ave se scores, th
ental group w est was 60,
ose tests wa s
rimental grou udents’ achie
ore the treatm ant differen
ol group on t were analyz
was 68, 56. ental group w
ignificant di n the post-te
ent of the ex
52
xperimental erage score
he different was
13, 11. 53 and the
s 8, 03. up was 62,
evement of ments were
nce in the the pretest.
zed in the The writer
was higher ifference in
st. xperimental
Pre ‐test
Post ‐test
53
group’s achievement after they received the treatment using DRTA method. The result showed that there is an improvement of the experimental group students’
reading skill.
4.3 Computation between the Two Means.
After getting the scores, the computation was made. The first way to identify the significant difference between the experimental and control group
were by comparing the mean of both group.
Table 4.3 The score distribution of Post-test
Student’s number
Experimental Group
Control Group
1 80 80
2 83
77 3
73 73
4 90
83 5
83 77
6 80
53 7
87 77 8
80 67 9
90 83 10
60 50 11
77 77 12
87 63 13
83 80 14
60 50 15
87 70 16
77 70 17
83 77 18
80 73 19
63 47 20
77 70
21 83
73 22
57 70
23 73
67 24
77 73
25 80
73 26
67 70
27 73
67 28
60 47
29 57
67 30
67 60
Total 2273 2056
Mean 75,78 68,56
54
After getting all the scores, the computation was made. The first way to know the significant difference of the experiment can be seen through the
difference of the means. The difference between the two means was computed using the following
formula as stated by Arikunto 2002:264:
Xe ∑Xe
Ne
The mean of the experimental group on the posttest was:
Xe
∑ N
, ,
Whereas, the mean of the control group on the posttest was:
Xc ∑Xc
Nc ,
,
From the calculation, the mean of the experiment group was 75, 78 and the mean of the control group was 68, 56; so the means of the two groups were
different from each other. The mean of the experimental group was higher than the mean of the control group. However, it could not be concluded that the
difference between the two means was significant.
55
4.4 The T-test Analysis
