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CHAPTER IV RESEARCH FINDINGS
A. The Description of Data
After presenting the materials to both experimental class and control class, the writer measured students’ vocabulary mastery by using a test. The testing was
done in two classes; those are VII-3 as an experimental class and VII-2 as a control class. The writer got the data from objective test which was multiple
choice forms of the control class and experimental class. The test consisted of 20 test items. The accumulation of the correct item was multiplied by 5. So, it would
be accumulated to 100 points of the test.
1. The Data of Control Class
In the following table is the score of pre-test and post-test in control class.
Table 4.1 The Students’ Score of Pre-test and Post-test of Control Class
Students’ Number
Control Class Gained Score
Pre-test Post-test
1 60
65 5
2 55
60 5
3 40
65 25
4 60
60 5
60 75
15 6
65 65
7 50
60 10
8 60
70 10
9 65
65 10
65 75
10 11
60 70
10
12 40
60 30
13 45
60 25
14 60
70 10
15 70
75 5
16 70
65 -5
17 60
75 15
18 80
75 -5
19 55
65 10
20 65
65 21
65 80
15 22
60 75
15 23
60 85
25 24
80 80
25 65
75 10
26 70
80 10
27 65
80 15
28 65
65 29
75 85
10 30
55 75
20
∑ n = 30 ∑ X
= 1845 ∑ X
1
= 2120 ∑ X
2
= 295 Average
61.5 70.66
9.83 Max
80 85
Min 40
60
Based on the table 4.2 above, the score of pre-test and post-test of control class showed that the highest score on the pre-test was 80 and the
lowest score was 40 with the average at 61.5. Then, the average of the post- test was 70.66. The highest score of post-test was 85 while the lowest score
was 60. It can be seen that the controlled class only gained score about 9.83 points.
2. The Data of Experimental Class
In the following table is the score of pre-test and post-test in experimental class.
Table 4.2 The Students’ Score of Pre-test and Post-test of Experimental Class
Students’ Number
Experimental Class Gain Score
Pre-test Post-test
1 50
75 25
2 60
70 10
3 45
75 30
4 55
70 15
5 50
65 15
6 60
75 15
7 45
70 25
8 75
90 15
9 40
65 25
10 55
85 30
11 50
70 20
12 70
85 15
13 50
70 20
14 50
65 15
15 65
75 10
16 50
70 20
17 65
80 15
18 65
70 5
19 60
60 20
55 75
20 21
45 65
20 22
55 80
25
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