Memperbaiki Kosakata Bahasa Inggris Siswa Kelas VIII Melalui Campur Kode Di SMP Negeri 15 Palu

Dina Navisa D. Agusalim, 2024. “Improving English Vocabulary of Grade VIII
Students Through Code Mixing At SMP Negeri 15 Palu”, under the supervision
of Abdul Kamaruddin and Wahyudin.

The objective of the research is to ensure whether or not employing code
mixing can improve English vocabulary of grade VIII students at SMP Negeri 15
Palu. The population of this research was the eighth grade students at SMP Negeri
15 Palu. Researcher selected sample using purposive sampling technique. The
sample of this study were students of class VIII B as an experimental class
totaling 31 students and class VIII C as a control class totaling 33 students. The
data were analyzed statistically to determine the significant difference of students
achievement in pre-test and posttest. The mean score of the experimental class on
the pretest was 42.19 and the control class was 43.39. Th mean score of the
experimental class on posttest was 78.70 and control class was 44.72. By using
0.05 level of significance and 62 degree of freedom, the researcher get the result t-
counted (9.43) was higher than t-table (1.657). It means that the hypothesis is
accepted. In conclusion, the use of code mixing can improve English vocabulary
of grade VIII students at SMP Negeri 15 Palu.

Key words: Improve, English Vocabulary, Code Mixing