Test The Technique of Data Collection
To analyze the data, the writer used Pearson Product-Moment Correlation Coefficient.
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√ Note :
r = Coefficient of correlation between X variable and Y variable
N = Number of respondent
=
The sum of the product of X and Y scores for each students = The sum of X scores
= The sum of Y scores = The sum of quadrate of each X scores
= The sum of quadrate of each Y scores = The sum of quadrate of each
scores = The sum of quadrate of each
scores
Before testing the t
count
the researcher made two hypotheses of signicance, they are:
Ha : there is a significant correlation between two varibales Ho : there is no significant correlation between two varibales
The formulation of test : a. If t
count
t
table
, it means that the null hypothesis is rejected and there is a significant correlation.
b. If t
count
t
table
, it means that the null hypothesis is accepted and there is no significant correlation.
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Budi Susetyo, Statistika Untuk Analisis Data Penelitian, Bandung: PT Refika Aditama, 2010, p.180
To interpret the index scores of “r” correlation, product moment r
xy
usually used the interpretation such as bellow:
Table 3.9 Product Moment Correlation Index
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‘r’ value of product moment correlation rxy
Interpretation
0.00 – 0.20
Considered as no correlation 0.20
– 0.40 Low correlation
0.40 – 0.70
Medium correlation 0.70
– 090 Strong correlation
0.90 – 1.00
Very strong correlation
Moreover, the index correlation was clasified as positive correlation or negative correlation. According to cresswell, positive
correlation happens if two factors have values that change in the same direction. While, negative correlation happens if two factors have values
that change in the opposite direction.
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Positive correlation means that as values of one factor increase, values of a second factor also increase. As
values of one factor decrease, values of a second factor also decrease. While, negative correlation means that as values of one factor increase,
values of the second factor decrease.
4
Riduwan and Sunarto, Pengantar Statistika untuk Penelitian Pendidikan, Sosial, Ekonomi,Komunikasi dan Bisnis, Bandung: Alfabeta, 2011, p.81
5
John W Creswell. Educational Research: Planning, Conducting, and Evaluating Quantitative and Qualitative Research. New Jersey: Pearson Parantice
Hall, 2008, p. 242
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