N-2. After obtaining the r value, in addition, it is analyzed by using effect size scale
2
.
Table 3.5 The Scale of Effect Size
Effect size r value
Small 0.100
Medium 0.243
Large 0.371
H. Statistical Hypothesis
According to Hatch and Farhady, hypothesis means a tentative statement about the outcomes of the research, it indicates that question must answered
by doing experiment
3
. Two hypothesis are formulated as follows:
H : µ
1
= µ
2
, or H
A
: µ
1
≠ µ
2
Specifically, the hypothesis in this study is the form of the null hypothesis and alternative hypothesis. The null hypothesis H
indicates there is no significant difference in means between controlled and experimental group.
Meanwhile, the alternative hypothesis H
A
means that there us a significant difference between controlled and experimental group.
2
Ibid., p. 106
3
Hatch and Farhady, Research Design and Statistic for applied linguistics,Los Angeles: Newbury House Publishers, Inc, 1982 p. 86.
33
CHAPTER IV FINDINGS AND DISCUSSION
This chapter discusses two points. First, it presents the data gathered. Second, the data collected are analyzed concerning the research questions stated in this
paper and elaborated based on theories established.
A. Findings
1. Pre-test Result
Pre-test was conducted on March 2016 to 24 students in class VIII A and 24 students in class VIII
B 20152016. Students’ scores pre-test was evaluated based on the key answers prepared before. Later, the scores were
statistically analyzed by using SPSS 20.0 for windows by following several steps.
The data of this part is the result of pre-test conducted in experimental class and controlled class. The scores were classified based on three
categories, low, middle, and high. The criteria for those classifications were based on the score. The low score was lower than 70, the middle score was
between 70-80, and the high score was higher than 80. In addition, the standard of minimum completeness of English mastery was 70. Therefore,
the low score was below the standard of minimum completeness. Furthermore, the classification of the score could be seen in the table below.
Table 4.1 The Score of Pre-Test
Score Experimental Class
Controlled Class Freq.
F Mean
Freq. F
Mean
70 13
54.16 66
20 83.33
61 70-80
6 25
4 16.66
81-90 5
20.83 below the standard of minimum completeness
