The last procedure is determining df degree of freedom with formula: �� =
+ −
In which: M = The average of students score
SD = Standard deviation SE = Standard errors
X = Experimental class Y = Controlled class
N
x
= Number of students of Experimental class N
y
= Number of students of Controlled class df = Degree of freedom
G. Statistical Hypothesis
The t-test is used to test the hypothesis to see whether H
1
is accepted; Ho is rejected or not. The statistical hypothesis of this research can be seen as
follows: H
1
:
µ
1
≠
µ
2
H :
µ
1
=
µ
2
And then, the criteria used as follows: 1. If t-test t
o
t-table t
t
in significant degree of 0.05, Ho null hypothesis is rejected. It means that the rates of the means score of the
experimental class are higher than the controlled class. The use of Directed Reading-Thinking Activity DR-TA strategy gives influence
on the students’ reading comprehension of narrative text. 2. If t-test t
o
t-table t
t
in significant degree of 0.05, Ho null hypothesis is accepted. It means that the rates of the means score of
the experimental class are the same as or lower than the controlled class. The use of Directed Reading-Thinking Activity DR-TA
strategy does not give influence on the students’ reading comprehension of narrative text.
35
CHAPTER IV FINDINGS AND INTERPRETATION
A. Data Description
The research was conducted at SMA Negeri 10 Kota Tangerang Selatan for three weeks. The research was conducted to two classes; experimental class
and controlled class. Those classes were the tenth grade of SMA Negeri 10 Kota Tangerang Selatan consisting of 38 students in each class. The material that was
taught for the research was narrative text. Pretest was given to the students in the first meeting while posttest was given in the last meeting to both classes
experimental and controlled class in order to know the students’ achievement
before and after; using Directed Reading – Thinking Activity DR-TA strategy
on the students’ reading comprehension of narrative text and without using DR-
TA strategy. The data of the experimental class were collected from the result of the
students’ scores of pretest and posttest. Table 4.1 below shows the description of the students’ scores in the experimental class variable X.
Table 4.1 The students’ scores of Experimental Class X
No Students’ Initial Name
Pretest Posttest Gained
1 AAOAW
64 84
20 2
AA 36
64 28
3 AMR
48 76
28 4
ANF 36
56 20
5 AS
24 52
28 6
AFL 28
52 24
7 BKA
56 72
16 8
CWD 66
68 2
9 CWJ
52 60
8 10
DYA 60
76 16
11 DCNR
64 72
8 12
EMRU 76
84 8
13 FAS
68 84
16 14
FY 60
72 12
No. Students’ Initial Name
Pretest Posttest Gained
15 HMH
68 80
12 16
IMM 56
64 8
17 JAP
32 52
20 18
JCS 56
60 4
19 JDF
60 72
12 20
KL 52
68 16
21 LF
44 68
24 22
MYA 40
68 28
23 MIH
72 80
8 24
MIS 68
80 12
25 MI
40 68
28 26
NA 56
72 16
27 NEB
48 68
20 28
PMA 40
48 8
29 RNA
56 80
24 30
RP 40
64 24
31 RAP
48 84
36 32
SDP 56
68 12
33 SAS
40 52
12 34
SDF 36
60 24
35 TDS
52 68
16 36
TI 68
88 20
37 VVP
40 68
28 38
ARE 60
60
∑ 1966
2612 646
Mean 51.74
68.74 17.00
Table 4.1 shows the students’ initial names in experimental class, their
pretest scores, their posttest scores and their gained scores. Based on the result of pretest in experimental class, it can be showed the highest score and the lowest
score of 38 students in the experimental class. In pretest, it can be seen the highest score was 76 and the lowest score was 24. The mean score of the pretest was
51.74. After pretest was conducted, treatment was given to the experimental
class. The students of the experimental class were given Directed Reading –
