CHAPTER III RESEARCH METHODOLOGY
A. Research Design
In this research, the writer used correlation research design. According to Kothari, correlation research studies the joint variation of two or more variables for
determining the amount of correlation between two or more variables.
1
Moreover, according to Kaufman, in correlation research, the goal is to determine whether two
or more variables are related.
2
In this research, the writer associated two variables: students’ mastery in using adjective and their ability in writing descriptive text.
According to Ary, correlation research employs data derived from preexisting
variables. There is no manipulation, and the data are taken from single group.
3
In this research, the writer analyzed the data taken from the s
tudents’ test. The writer scored both their in using adjective and their writing ability by using writing test. After
getting the score, the writer analyzed the data to know whether there is correlation of the variables.
1
C.R Kothari, Research Methodology: Methods and Techniques, New Delhi: New Age,2004,p.130.
2
Geoffrey Marczyk, et al. Essential of Research Design and Methodology, New Jersey: John Wiley Sons, Inc.,2005,p.3.
3
Donald Ary, et al., Introduction to Research in Education, 8
th
ed Wadsworth, Belmont, 2010,p.349.
B. The Variable of the Research
In this research there were two kinds of variables that investigated. Both of them are dependent and independent variable, they are:
1. Independent variable is the students’ mastery in using adjective X.
2. Dependent variable is the students ’ ability in writing descriptive text Y.
C. Operational Definition of Variables
1. The students’ mastery in using adjective is students’ ability to express or
create clear ideas of what the noun or pronoun tastes, smells, feels, looks, and sounds purpose to make the description more vivid and the readers can hear,
see, touch, taste, and smell what they are describing. 2.
The students’ ability in writing descriptive text is the students’ ability to produce a text which describe briefly certain kind of object such as a person,
a place, a thing, or an animal which fulfills the criteria of good writing, including content, organization, vocabulary, language, and mechanics.
D. Population, Sample and Sampling Technique 1. Population
Population is all individuals of interest to the researcher.
4
Furthermore, according to Kothari, it is the total of items about which information is desired.
5
The population of this research was students of the eighth grade of SMPN 1
4
Suharsimi Arikunto, Prosedur Penelitian:Suatu Pendekatan Praktik, 14
th
ed Jakarta: Rineka Cipta, 2013,p.173
5
C.R Kothari, Op.Cit.,p.153
Kategori