CHAPTER III CHAPTER III RESEARCH METHOD
A. Research Design
The research design uses correlation design, Correlational researchgathers data from individuals on two or more variablesand then seeks to determine if the variables are related (correlated).
Correlationmeans the extent to which the twovariables vary directly (positive correlation)or inversely (negative correlation).
The degree of relationship is expressed as anumeric index called the coefficient of
correlation.(Aryet, all, 2006, p. 27)
This design tried to measure the rate of interdependence between two variable correlation studies related to the correlation scoring between two variables. This study involved the measurement of the correlation degree.
In working out this study, the writer used quantitative research. Quantitative
research is inquiry employing operational defenition to generate numeric data to
answer predetermined hypothesis or qoestion( Arikunto, 2006, p. 648). This
design explained and to know about the correlation between the mastery of
English vocabulary and the reading skill in descriptive paragraph for the English
Students of Sl\1PN I PermataKecubung.
writer used the test as the instrument of the study.
PermataKecubung. In order to know the interpretation of the calculated result, the reading of English learning of Eighth Grade Students at of S:MPN 1
they were to measure the significant students' correlation between vocabulary and prove the study itself The writer was helped by them to find the aims of the study,
The data were very important in the study. They were needed to support and 1. Research Instrument
C. Research Instrument
Source data: from the Data of SMPNl Permata Kecubung
School Class Total
SMP Negeri 1 VIDA 21
Permata Kecubung
VIDB 25
TOTAL 45
Table 3.1
The Population Distribution of the Research.
2017/2018.
study is all of students of S:MPN 1 PermataKecubung in Academic years or object meanwhile the sample is a part of population. The population of this population was defined as all members of any well-defined class of people, events subjects it was taken all subjects. And Donald Ary et.al (2006, p 138) stated that According to Arikunto (2006, p. 130) if the subject of research less than 100 B. Population and sample
25
2. Instrumentation
TryOut
The try out of instruments was conducted in class VIII - A and VIII - B with the total number of the students was 42 students. The writer conduct a try out before it applied to the real sample of this study.
a. Test
The researcher would take the data of this research by using a test. The test is used to know the result of student's test and this result will give the description where is more ability of the student comprehended between vocabulary mastery and reading comprehension. The test is vocabulary test and reading test. The test was students' vocabulary mastery in multiple choice test which focused on word classes and there were 30 items for the try out test which consisted 11 items for noun, 10 items for verb and 9 items for adjective. The test for reading in multiple choice test which focused on descriptive text which consisted 7 descriptive text.
There were 30 items for try out test. The test for vocabulary and reading was adopted from
"KTSP, Referensi Bahan Ajar, Target Pegangan Guru, Bahasa lnggris untuk SMPIMTS Kelas VIII.b. Documentation
Documentation in this study is used as the second technique to support the
data. Documentation is applied to get the needed information at eight grade
students of SMPN 1 PermataKecubung, such as the number of students, classes,
and the students' name list. All those data is collected from the documents
available of SMPN 1 PermataKecubung.
3. Instrument Validity
Ary ( 2006, p 225 ) stated that an instrument was considering being a good one if it meets some requirements. One of them is validity. Validity defined as the extent to which instrument measured what it claimed to measure. The validity of a test is the extent to which it measures what is supposed to measure and nothing else. Every test, whether it is a short, informal classroom test or a public examination, should be valid made by the constrctor. The test must aim to provide a true measure of a particular skill that it is intended to easure, to the extent that is measure external knowledge and other skills at the same time, it will not be a Try out is used to measure to the suitable instrument and the students' ability in mastering English vocabulary and their reading ability. Before the writer does the try out, the writer arranges the procedure of the instrument that will be used to test the students that consist of:
1. Planning, it consists of purpose formulation, determining the variable and categorizing the variable
2. The vocabulary and reading of test items
3. Editing, it consists of work basic, answer key. Etc.
4. Try out
5.
Analyzing the result.
6. The writer will take other place for try out. The place is school at S1\1P Negeri 2 Permata Kecubung.
27
Indicator Language Items of Types of Descriptions test items skill & test test
component
The students Vocabulary 30 items Multiple @" Word classes
are able to choice
responds the rs= Descriptive text
meamng of
descriptive text Reading 30 items Multiple
accurately, choice
fluently, and
Table 3.2
Content Specification of Items in Research Instrument
in most of the school's material.the material that used in the school. The writer used the kinds of text that used items for vocabulary and 30 items for reading, and the construction based on In constructing the instruments of the study, the writer considered 30 predict or be related to other measures (Daniel, 2004, p 32).
content of the instrument. That instrument can also theoretically be expected to but can be improved by asking experts and respondents about their views on the Content validity is obviously related to theoretical knowledge of the area,
b. Content validity
of SMPN 1 PermataKecubung.
research, can be suitable to the others at the same level of Eighth Grade Students teachers, indicators, and test. The type of the test items, which will use in this The type of face validity, if the test items look right to other testers,
a. Face Validity
main foci for the test validation.
valid test. Face validity, content validity, and construct validity became the three
N