70.66 Max The Data of Control Class

Table 4.3 Interview Specification and the Students’ Responses From the data of interview above, the students presumed that strategy in learning were the essential things to make the teaching and learning process more interesting and easier to understand. No Interview Specification Students’ Response 1 Mengetahui persepsi siswa tentang pentingnya penggunaan strategi English songs from YouTube dalam pengajaran penguasaan vocabulary. - All of them strongly agreed that using strategy in building vocabulary were very important. - The twelve of them strongly agreed that teacher should use English songs from YouTube to facilitate student in mastering vocabulary in the classroom. - Meanwhile three students in lower score were still uncertain if other teachers need to use it as learning strategy. - After building vocabulary using English songs from YouTube, the thirteen of them state that it influenced their vocabulary mastery. 2 Mengetahui persepsi siswa tentang penggunaan strategi English songs dalam pengajaran penguasaan vocabulary From fifteen students interviewed, they stated: - English songs from YouTube were needed to support and facilitate them in mastering vocabulary - English songs could make them easier in reminding vocabulary. - They were happy to learn vocabulary by using songs from YouTube. - They were really sure that English songs from YouTube could help them to master the vocabulary. They said that they could use English songs everywhere freely.

B. The Analysis of Data

1. Normality Test

Testing normality test in this research used Kolmogorov-Smirnov methods in SPSS v.18 to count the normality of each test. The test would be normal distribution if the result of calculation from SPSS Statistic 18, the number showed less than the result in Kolmogorov-Smirnov table with the number of sample n is 30. The results of normality test of the data are presented as follows: Table 4.4 Normality Pre-test Results between Experimental Class and Control Class One-Sample Kolmogorov-Smirnov Test Experiment Class Control Class N 30 30 Normal Parameters a,b Mean 57.1667 61.5000 Std. Deviation 9.62068 9.57277 Most Extreme Differences Absolute .172 .204 Positive .172 .157 Negative -.095 -.204 Kolmogorov-Smirnov Z .941 1.120 Asymp. Sig. 2-tailed .338 .163 a. Test distribution is Normal. b. Calculated from data. The normality calculation above used One-Sample Kolmogorov- Smirnov Test. From the table 4.03, it can be seen that the absolute difference D of Experiment Class data is 0.172. It is much less than absolute difference in Kolmogorov-Smirnov table with the closest Kolmogorov-Smirnov critical points of 30 = 0.242. It means that the pre-test of experiment class data is normal. Meanwhile, the absolute difference of Controlled Class data is 0.204. It is also much less than D-table with the closest Kolmogorov-Smirnov critical points. In other words, the pre-test of control class data is normal. Therefore,