students of junior high school. Students should master descriptive text as mentioned in curriculum, so that it can facilitate students in understanding an
object in detail. To know how understand students in descriptive text, both of test vocabulary and reading of descriptive text can be used as instruments.
Therefore, based on the above explanations, it can be known that vocabulary probably has the great deal with reading. Thus, it can be supposed that if students
have many vocabularies, they can comprehend descriptive text; otherwise if students have a few of vocabularies, they cannot comprehend descriptive text.
F. Hypothesis
Based on the problems and theory that have been mentioned, the hypothesis will be stated as follows:
First, alternative hypothesis ha: there is a positive correlation between student’s vocabulary and their reading comprehension of descriptive text.
Second, null hypothesis ho: there is no correlation between student’s
vocabulary and their reading comprehension of descriptive text.
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CHAPTER III RESEARCH METHODOLOGY
A. Place and Time of the Research
1. Place of the Research
The research was conducted at MTs . Syamsul ‘Ulum that is located on Jl.
Bhayangkara, Gunung Puyuh, Kota Sukabumi. 2.
Time of The Research The time of the research was on Wednesday, November, 27
th
2013.
B. Subject and Object of the Research
1. Subject of the Research
The subject of the research was 30 students in the second grade C 8C of MTs Syamsul
‘Ulum academic year 20132014. 2. Object of the Research
The object of the research was descriptive text, which was shown in vocabulary and reading comprehension that will be tested.
C. Method of the Research
The purpose of this research was to know and to find the correlation between
student’s vocabulary and their reading comprehension of descriptive text. Therefore the quantitative research was selected and the method that was applied
was correlational method. Correlational method associate two or more variables to know the relation between those variables.
1
In order to know the correlation between those variables needs statistic. Because according to Suharsimi, statistic
can be used to compare the result of two different variables to determine the relation between those variables, and this is called as coefficient correlation.
2
There were two variables in this research; those were reading comprehension as dependent variable Y and vocabulary as independent variable X. Therefore,
1
L.R. Gay, et al, Educational Research Competencies for Analysis and Applications, Boston: Pearson Education International, 2009, p. 196.
2
Suharsimi Arikunto, Prosedur Penelitian, suatu Pendekatan Praktik, Jakarta: PT RinekaCipta, 2010, p. 313.
Pearson Product Moment was used in this research to know the correlation of both variables.
D. Population and Sample of the Research
The population of this research was about six classes of second grade which consist of 177 students. Because the number of population was too big, the writer
considered to take sample for collecting data. In taking sample, the writer used purposive sampling techniques because of some considerations. The first thing
was the ability of the population was same. The 8C class was selected as sample of this research because this class has the same ability with other classes, so that
this class can be representative one. The consideration of practicality and efficiency of time, energy, and fund could be another issue in taking this sample.
E. Instruments of the Research
In conducting a research, it is necessary to use an instrument for collecting data. The instruments can be a test, interview or questioner based on the research
need. In this research, the instruments which were used were test and the result of the test. Because the variables were vocabulary and reading, the test consisted of
vocabulary test and reading test. 1.
Vocabulary test. The questions of vocabulary test were compiled from second grade books
and other sources that were appropriated with their level and their material. Then, kinds of vocabulary tests were to find the synonym, antonym, and
meaning based on the context of the descriptive sentences. 2. Reading Test
Students were asked to read and answer the questions of reading. The reading material and its question were selected from students’ book and
other sources which was suitable with their level. The questions that were given were to find topic, main idea, supporting details, true or false, etc in a
descriptive text.
