THE CORRELATION BETWEEN GRAMMAR MASTERY AND WRITING ABILITY OF THE EIGHTH GRADE STUDENTS OF SMPN 2 MENGWI IN THE ACADEMIC YEAR 2021/2022

The present study, which made use of ex-post-facto research with correlation design, was intended to find out the significant correlation between grammar mastery and writing ability of the eighth graders of the SMPN 2 Mengwi in the academic year 2021/2022 The sample was selected by using random sampling technique consisting of 40 students. Furthermore, to collect the data, the researcher used two kinds of test: grammar test and writing test. Moreover, data collected was analyzed by using SPSS 23.0 program with the following steps: normality testing, homogeneity testing, Pearson Product Moment test, and t-test. The result of this research showed that there was a significant correlation between grammar mastery and writing ability with r value 0. 462. In addition, the value of t counted was 14.619 > t table 2.021 which meant that the hypothesis was accepted. Therefore, it can be summarized that the correlation between grammar mastery and writing ability was very high.