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CHAPTER III RESEARCH METHODOLOGY
A. Place and Time of the Research
This study was conducted at MTs. Nurul Hidayah Jeruk Purut. This school is located on JL. Jeruk Purut, Cilandak Timur. The conducting of this research
was about one month from October till November 2013.
B. Method and Research Design
The method of this research is quasi-experimental research by using pre-test and post-test control group design. In quasi experimental research, the writer did
not give a random assignment as in the true experimental research because randomly assigning will disrupt the classroom learning.
1
The writer did not use the true-experimental research because there are only two classes; therefore, the
writer could determine which class would the experimental class and controlled class be without gave the assignments to students randomly.
There was a different treatment between experimental and controlled class. In experimental class, students would have been treated by certain treatment,
–by applying clustering technique to students’ descriptive writing– whereas in
controlled class students taught without using clustering technique.
C. Population and Sample
a. Population
Population is a region which consists of subject or object; it has a certain characteristic and quantity and determined by the researcher to be
analyzed in order to make the conclusion.
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The population of this research was all of the second grade students at MTs. Nurul Hidayah in
the academic year 20132014.
1
John W. Creswell, Educational Research: Planning, Conducting and Evaluating Quantitative and Qualitative Research, Boston: Pearson Education, Inc.,, p. 309.
2
Sugiyono, Metode Penelitian Pendidikan, Pendekatan Kuantitatif, Kualitatif, dan RD, Bandung: Alfabeta, 2010, p. 117.
b. Sample
Sample is a selected group of subjects for a study where the individuals represent the larger group.
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The strategy of sampling was Non-probability Sampling; it means that this kind of sampling does not
equally give the opportunity for every population to be selected as the sample.
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The technique of the sample was total sampling; where all populations become the main sample. The sample of this research was;
the A class with 16 students as the experimental class and B class with 16 students as controlled class.
D. Validity of the Instrument
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