THE CORRELATION BETWEEN STUDENTS' VOCABULARY MASTERY AND THEIR ABILITY IN WRITING AN ANALYTICAL EXPOSITION TEXT OF THE SECOND YEAR STUDENTS AT SMAN 1 LUBUK ALUNG

Abstrak

Abstract

The purpose of this research was to correlate between students’ vocabulary mastery and their ability in writing an analytical exposition text of the second year students at SMA 1 Lubuk Alung. The design of this research was correlation research. The population of this research was  261 of second year students at SMA  1 Lubuk Alung. In selecting the sample, the writer used stratified cluster random sampling technique. The number of sample was  42 students from class XI IPS 3 and XI IPA 5. The writer found the reliability of the  vocabulary test by using split-half method. It was found that the coefficient of correlation was  very high (.85). It means that the test was reliable. Then, the writer also found the reliability of writing test by using inter rater method. It was found that the coefficient of correlation was very high (.96). It means that the test was reliable. The test was  valid in terms  of content validity. The result of the data analysis showed that the value r- calculated in this research was .44 with the level significant 95%(α.05) and the degree of freedom (df) n-2(40) and the value of r- table was .31. It means that r- calculated (.44) was higher than r- table (.31). Learning from the result, it can be concluded that the correlation between students’ vocabulary mastery and their ability in writing an analytical exposition text of the second year students at SMA 1 Lubuk Alung was moderate.

Key words: Correlation, writing, vocabulary mastery, analytical exposition text.