writer chose to conduct the new research with the title “The Effectiveness of Songs to Increase Students’ Vocabulary”.
E. The Research Hypothesis
The purpose of this study is to find out the empirical evidence for the students in learning vocabulary using songs is effective or not in building
students’ mastery of vocabulary. To get the answer of the hypothesis above, the writer proposes alternative
hypothesis H
a
and the null hypothesis H
o
as follows:
1. Null Hypothesis Ho There is no significant difference of students’ achievement
between those who were taught by using songs in teaching vocabulary in experiment class and those who were taught without
using songs in controlled class. 2. Alternative Hypothesis Ha
There is a significant difference of students’ achievement between those who were taught by using songs in teaching vocabulary in
experiment class and those who were taught without using songs in controlled class.
19
CHAPTER III RESEARCH METHODOLOGY
This chapter is divided into several parts. They are place and time of the study, subject and object of the study, method of study, procedure of
inventing, technique of data collecting, technique of data analysis, and the statistical hypotheses.
A. Place and Time of the Study
The research was conducted at SMP Al Huda, which is located at Jalan Utama, Cengkareng, West-Jakarta. Focus on second grade of Junior high
school. The research was held during May 2015.
B. Population and Sample of the Study
In this research, the writer took the second grade of SMP AL Huda Jakarta as the population. The second grade of this school consists of six
classes; namely VIII-1 until VIII-6. The amount of population in that school was about 192 students. The writer took one class to be experimental class
and one class to be controlled class. In this term, the writer choose VIII-6 as the experiment class VIII-2 as controlled class. The consideration of
choosing those classes to be experimental and the controlled classes was based on purposive sampling. In purposive sampling, the researcher chooses
the sample using his experience and knowledge of the group to be sampled.
1
In this term, their English teacher knew their students’ English ability, and their English teacher judged that those two classes have the same ability. It
was also supported by L.R Gay stated in his book that “purposive sampling, referred to as judgment sampling, is the process of selecting a sample that is
believed to be representative of a given population”.
2
Therefore, the English
1
L.R Gay, Geoffrey E. Mills and Peter AIrasian, Educational Research: Competencies for Analysis and application, 9
th
Ed., New Jersey: Pearson Edation, 2009, P. 134.
2
Ibid.
