CHAPTER III RESEARCH METHODOLOGY
A. Purpose of the Study
The purpose of this study is to get empirical data about the correlation between students
’ vocabulary mastery and their reading ability, at the second grade students of Junior High School SMP YMJ Ciputat, Tangerang Selatan.
B. Place and Time of the Study
The research was conducted at SMP YMJ Ciputat that is located on Jalan Limun no.27 Ciputat, Tangerang Selatan. The research was carried out from 4
th
up to 13
th
January, 2011. After getting an agreement of the school principal and then consult to the English teacher who teaches at the second grade of SMP YMJ
Ciputat.
C. Method of the Study
In completing the data, the writer used the field research. In the field research, the writer conducted the research for the students at the second grade of
SMP YMJ Ciputat. The writer gave a test to the students and asked them to answer the question that he made.
This research uses the quantitative method, with the analysis of Product Moment according to Karl Pearson.
1
It is usually used to correlate two variables
1
Prof. Drs. Anas Sudijono, Pengantar Statistik Pendidikan,Jakarta: PT Raja Grafindo Persada, 2008 pp. 177-178
based on its correlation coefficient value. It is useful to describe and find out the significance of the correlation between those two variables, variable X and
variable Y. The first variable is the students ’ Vocabulary score which is taken by
how many vocabularies that they know from the test given; it is considered as independent variable variable X. The second variable is their Reading ability
score which is taken from their comprehension in reading with the texts; we considered it as dependent variable variable Y.
D. Population and Sample
The writer takes the whole students at second grade of SMP YMJ Ciputat because they have enough knowledge and motivation in their study and their
reading ability is also good enough. And in determine the sample, the writer use cluster sampling. There are
two classes A and B in the second grade of SMP YMJ. From those classes the writer took one class of class A they are 40 students as an experiment class and
also as sample of this study.
E. Technique of Data Collecting
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