taught of descriptive writing by using cooperative learning as the experimental class or variable X
between the students’s achievement from controlled class or variable Y using
conventional method .”
c The calculation of t
hitung
is compared with t
table
by using degree of significance 0.05.
d If t
test
t
table
, so the alternative hypothesis H
a
is accepted e If t
test
t
table
, so the null hypothesis H
o
is rejected
40
CHAPTER IV RESEARCH FINDINGS
This chapter presents findings of the study. It consists of data description, data analysis, and data interpretation.
A. The Description of Data
In this section the writer presents the scores of experimental and the controlled class.
a. The Scores of Experimental Class
The data of students’ in experimental class includes: pre-test, post-
test, and gained scores that have been collected then described in the table as follow:
Table 4. 1 The scores of experimental class
Students X
Pre-test score of the experimental class
Post-test score of experimental class
Gained score of experimental class
1 37
79 42
2 46
65 19
3 41
85 44
4 30
83 53
5 37
84 47
6 35
71 36
7 30
88 58
8 35
78 43
9 30
67 37
10 30
82 52
11 30
63 33
12 30
65 35
13 30
70 40
14 30
82 52
15 30
74 44
16 61
81 20
17 76
80 4
18 35
69 34
19 40
77 37
20 57
79 22
21 40
67 27
22 50
70 20
23 60
80 20
24 77
83 6
25 71
77 6
26 63
85 22
27 51
80 29
28 48
75 27
29 51
80 29
30 40
80 40
31 40
83 43
32 40
81 41
33 30
83 53
34 40
81 41
TOTAL Ʃ χ1= 1471
Ʃ χ2= 2627 Ʃ χ= 1156
Mean Mχ1= 43.26470588 Mχ2= 77.26470588 Mχ= 34
The table above showed the score of pre-test, post-test and gained score for the experimental class. The pre-test had been done before the
teaching and learning of descriptive writing. The number of students in experimental class who participated in test was 34. The lowest score for
pre-test is 30, post-test is 63, and gained score is 4. Next, the writer calculated the median of pre-test is 40, post-test is 80, and gained score is
36.5. For the highest score of pre-test is 77, post-test is 80, and gained score is 58. For the mode score of pre-test, 30 and post-test is 80, and
gained score is 20. In other side, the Main score of pre-test is 43.264, main score of post-test is 77.264, and gained score is 34. After that, the
writer calculated for scores of controlled class.
b. The Scores of Controlled Class
There are 34 students in controlled class who had participated. The data is presented in table 4.2.
Table 4.2 The scores of controlled class
Students X
Pre-test of Controlled Class
Post-test score of the controlled class
Gained Score of Controlled Class
1 40
50 10
2 60
61 1
3 60
66 6
4 30
50 20
5 32
50 18
6 31
60 29
7 35
60 25
8 30
55 25
9 30
55 25
10 40
71 31
11 60
60 12
60 70
10 13
50 78
28 14
30 55
25
15 50
65 15
16 40
70 30
17 38
60 22
18 50
60 10
19 40
66 26
20 72
73 1
21 30
72 42
22 35
70 35
23 74
76 2
24 31
64 33
25 63
67 4
26 40
67 27
27 30
56 26
28 32
70 38
29 40
67 27
30 35
74 39
31 35
60 25
32 31
68 37
33 30
63 33
34 30
63 33
TOTAL Ʃ γ 1= 1414
Ʃ γ 2= 2172 Ʃ γ= 758
Mean M
γ 1= 41.58823529 Mγ 2= 63.88235294 M
γ= 22.29411765
There are differences between the pre-test and the post-test score of controlled class. In the pre-test, the lowest score is 30, post-test is 50 and
gained score is 0. Besides, the highest score of pre-test is 74, post-test is 78, and gained score is 42. Then, the writer calculated the median score of
pre-test is 36.5, post-test is 64.5, and gained score is 36.5. For the mode score of pre-test is 30, post-test is 60, and gained score is 25. Meanwhile
