CHAPTER IV RESEARCH FINDING
A. Data Description
As described in previous chapter that the writer held the field research at SMP Islam Al Syukro Universal Ciputat, Tangerang Selatan. She held the
field research by taking students’ score of test Pre-test and post-test. The pre-test is given before the treatment is begun and the post-test is given after
the treatment is finished. To find out the result of test pre-test and post-test the writer makes the
table of the students’ score is in follow:
Table 4.1
The Students’ Score of Experimental Class
Students Pre-test
Post-test Gained
1 70
85 15
2 68
80 12
3 52
78 26
4 76
80 4
5 56
70 14
6 64
70 6
7 65
75 10
8 54
70 16
9 76
86 10
10 73
95 22
11 80
86 6
12 70
90 20
13 78
75 -3
14 75
80 5
15 35
63 28
16 62
75 13
17 78
82 4
18 52
75 23
23
19 65
75 10
20 36
63 27
21 73
80 7
22 49
65 16
23 58
72 14
24 63
78 15
∑ = 1528 ∑ = 1848
∑ = 320 � = 63.67
� =77.00 � = 13.33
According to the result of pre-test from the experimental class, it could be seen from 24 students in the experimental class, the mean of pre-test was
63.67 and the mean of post-test 77.00. So, the average of gain score was 13.33. Before the treatment of using picture sequence, the lowest score of pre
test was 35, the highest was 80. The after treatment, the lowest score of post- test was 63 and the highes score was 95. In this class, there were 5 students
who passed the minimal scored KKM = 75 in the pre-test, then it increases become 17 students who passed the minimal scored in the post test.
From the data above, number of class interval of pre-test in experimental class as follows:
K = 1 + 3.322 logn K = 1 + 3.322 log24
K = 1 + 4.59 K = 5.59 = 6
Interval as follows: I = The highest score
– The lowest score Number of Class
I = 80-35 = 7.5 = 8 6
Table 4.2
Class interval of pre-test in experimental class
Class Interval Tally
Frequence
35-42 II
2 43-50
I 2
51-58 IIIII
5 59-66
IIIII 5
67-74 IIIII
5 75-82
IIIIII 6
From the data above, number of class interval of post-test in experimental class as follows:
K = 1 + 3.322 logn K = 1 + 3.322 log24
K = 1 + 4.59 K = 5.59 = 6
Interval as follows: I = The highest score
– The lowest score Number of Class
I = 95-63 = 5,33 = 5 6
Table 4.3
Class interval of post-test in experimental class
Class Interval Tally
Frequence
63-67 III
3 68-72
IIII 4
73-77 IIIII
5 78-83
IIIIIII 7
84-88 III
3 89-95
II 2
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