CHAPTER III RESEARCH METHODOLOGY AND FINDINGS
C. Research Methodology
9. The Purpose of Research
The first purpose of the research is to know whether there is any correlation in the achievement of students’ vocabulary and reading, and the second is to get empirical data
about the correlation of students’ vocabulary achievement and reading ability at the second grade students’ of Islamic Junior High School Madrasah Tsanawiyah Al Khairiyah,
Jakarta.
10. Operational Definitions of Variables
There are two kinds of variables in this research, the first variable is the students’ vocabulary achievement 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. The students’ vocabulary achievement and reading comprehension is resulted from
the test of vocabulary that is carried out by English book for Junior High School Students’ The Bridge English Competence for SMP grade VIII, Yudhistira, Ringkasan Materi dan
Bank Soal Bahasa Inggris untuk SMP MTs kelas VII, VIII dan IX, Yrama Widya and Seri Pendalaman Materi Bahasa Inggris SMP dan MTs, ESIS.
11. Place and time of Study
The research took place at Islamic Junior High School Madrasah Tsanawiyah Al Khairiyah, Jakarta located at Jl. Mampang Prapatan IV No. 71-74, Jakarta.
The research was carried out from December 13
th
up to December 20
th
2008. after getting an agreement of the school principal and than consult to an English teacher who is
teach at the second grade students’ of MTs Al Khairiyah.
12. Method of Study
In completing the data, the writer used two kinds of method, library research and field research. In library research, the writer read some books dealing with the study in order
to find out the theoretical data that support the study. In the field research, the writer conducted the research for the students at the second
grade of MTs Al Khairiyah, Jakarta academic year 20082009. The writer gave a test to the students and asked them to answer the question that she made refers to standard competency
and indicator of KTSP 2006. This research uses the correlation method, with the analysis of Product Moment
according to Karl Pearson. It is usually used to correlate two variables 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.
13. The Technique of Sample Taking
The population of the study was the second year students’ of MTs Al Khairiyah, Jakarta. There are four classes of each grade with the population of the second year is about
168 students, the classes are 2
nd
A, 2
nd
B, 2
nd
C and 2
nd
D. From them, the writer just takes one class as the population and sample of experiment class. There are about 42 students’ as a
sample from the class 2
nd
B but the writer only took 40 students’ and all of them were tasted as a sample through random sampling system.
14. The Technique of Data Collecting
In completing the data, the next step of this research is collecting the data; the function of data collecting is to determine the result of the research. In collecting data, the
writer uses some techniques.
a. Observation
The first is by observing directly to the location where the research is carried out. The purpose is to ask the permission from the head master to do research in that place and to
know whether the population and sample is available or not.
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