Pre-test Score The Description of Data

47 Table 4.2 The Students‟ Score of Post-test in Experiment Class VIII-D and Controlled Class VIII-C Students Experiment Class Controlled Class 1 83 70 2 100 73 3 73 76 4 53 76 5 60 63 6 96 66 7 63 63 8 83 50 9 86 83 10 90 66 11 83 86 12 66 86 13 90 90 14 53 90 15 83 93 16 86 66 17 86 40 18 73 76 19 76 73 20 50 73 21 83 70 22 76 80 23 86 43 24 66 66 25 90 56 26 86 73 27 86 86 28 66 66 29 56 53 30 100 63 31 73 86 32 53 73 33 73 76 34 86 73 ∑ 2613 2423 Mean 76.852941 71.264706 Minimum 50 40 Maximum 100 93 Median 83 73 48 The table of 4.2 showed the students‟ score of post test in experiment class and controlled class and based on the table, it can be seen that the students in experiment class is higher than the students in controlled class. The amount score of experiment class was 2613, while the amount score of controlled class was 2423. From the table of pre-test table 4.1 we can see that the controlled class was higher amount score than experiment class, but the experiment class has higher total score than controlled class in posttest‟s score. While the average score of post test in experiment class was 76.852 and the average score of post test in controlled class was 71.264. The writer concluded that both of the two classes have progressed, because the average score of pre-test in experiment class was 56.64 and the average score of pre-test in controlled class was 60.17, however the progress in controlled class as not much as the progress in the experiment class.

3. The Gained Score

After showing the comparison of students‟ pre-test and post-test scores, the writer made a calculation about the gained score in both of the two classes. The gained score can be seen from the increasing score of pre-test students score compared with the post-test scores. The gained score is explained on table 4.3 and the table itself are consists of three columns, the first column showed the students‟ identification number. The amount of students‟ identification number in both experiment and controlled class is 68 students and each of the class has 34 students. The next column described the gained score in experiment class, while the third column showed the gained score of students in controlled class. In order to make the table easy to understand, the writer presented the gained score table on the next page. 49 Table 4.3 The Students‟ Gained Scores of Experiment Class VIII-D and Controlled Class VIII-C Students Experiment Class Controlled Class 1 40 20 2 24 23 3 23 16 4 17 26 5 -6 7 6 16 6 7 23 23 8 23 -13 9 30 10 10 17 -7 11 17 6 12 3 16 13 4 14 14 23 4 15 33 16 13 6 17 26 18 33 13 19 13 20 20 7 10 21 30 20 22 26 14 23 20 -7 24 36 6 25 14 6 26 23 13 27 33 26 28 3 26 29 20 10 30 27 23 31 30 3 32 13 7 33 13 23 34 20 7 ∑ 687 377 Mean 20.205882 11.088235 Minimum -6 -13 Maximum 40 26 Median

21.5 10