The table data above describes that the gained score for the experimental class is higher than the controlled class. The lowest gained score of the experimental
class is 5 and the controlled class is -20, while the highest gained score of the experimental class is 40 and the controlled class is 35. In addition, the mean of
gained score in the experimental class is 25.50 and the controlled class is 14.50.
2. The Data Analysis
This section is intended to answer the research question whether Collaborative Strategic Reading CSR effective on
students‟ reading comprehension achievement at the first
grade of SMA Mathla‟ul Huda Parung Panjang Bogor. T- test was used to answer the research question and conducted in both the
experimental class and controlled class: Table 4.4
Comparison Scores of Each Student in Experimental Class and Controlled Class
STUDENTS X
Y X-MX
Y-MY X-MX
2
Y-MY
2
1 30
-5 4.5
-19.5 20.25
380.25 2
15 30
-10.5 10.5
110.25 110.25
3 20
-5.5 14.5
30.25 210.25
4 25
35 -0.5
20.5 0.25
420.25 5
40 14.5
-14.5 210.25
210.25 6
30 20
4.5 5.5
20.25 30.25
7 30
10 4.5
-4.5 20.25
20.25 8
30 45
4.5 30.5
20.25 930.25
9 30
35 4.5
20.5 20.25
420.25 10
10 25
-15.5 10.5
240.25 110.25
11 45
35 -19.5
20.5 380.25
420.25 12
20 10
-5.5 -4.5
30.25 20.25
13 30
35 4.5
20.5 20.25
420.25 14
10 -15.5
-14.5 240.25
210.25 15
20 20
-5.5 5.5
30.25 30.25
16 40
20 14.5
5.5 210.25
30.25 17
50 10
24.5 -4.5
600.25 20.25
18 10
10 -15.5
-4.5 240.25
20.25 19
25 30
-5.5 10.5
0.25 110.25
20 10
10 -15.5
-4.5 240.25
20.25
STUDENTS X
Y X-MX
Y-MY X-MX
2
Y-MY
2
21 40
-20 14.5
-34.5 210.25
1190.25 22
20 5
-5.5 -9.5
30.25 90.25
23 45
5 19.5
-9.5 110.25
90.25 24
15 -15
-10.5 -29.5
110.25 870.25
25 15
30 -10.5
10.5 110.25
110.25 26
35 20
9.5 5.5
90.25 30.25
27 35
20 9.5
5.5 90.25
30.25 28
15 -10.5
-14.5 110.25
210.25 29
5 10
-20.5 -4.5
420.25 20.25
30 20
5 -5.5
-9.5 30.25
90.25
765 435
4267.5 7267.5
Mean 25.5
14.5 142.25
242.25
The procedures of calculation are as follow: Firstly, the researcher had to find the mean gained score from the
experiment class and the controlled class. From the experiment class the researcher got:
M
x
=
M
x
= M
x
=
25.5
The next step is to find out the mean gained score from controlled class: M
y
=
M
y
= M
y
=
14.5
From the calculation above the researcher got the mean gained score of each class is 25.5 for experiment class and 14.5 for controlled class.
After the researcher got the mean gained score of experiment class and controlled class, she will find the deviation of each class, the calculation as
follow:
SD
x
=
√
SD
x
=
√
SD
x
= √
SD
x
= 11.93
This score is showed the deviation of the experiment class. The next step is to find out the deviation of controlled class.
SD
y
=
√
SD
y
=
√
SD
y
= √
SD
y
= 15.56
After the researcher found the deviation of gained score of each class, experiment class 11.93 and controlled class 15.56, she determines standard
error of experiment class as follow:
SE
x
=
√
