4.2.2 The Result of Documentation
In this research, the documentation was used to get the supporting data about the total number of the eighth grade students of SMP Islam Gumukmas in the
20142015 academic year and the names of the research respondents that was VIII A as the experimental group and VIII C as the control group.
a. The Total Number of the Eight Grade Students
The total number of the eighth grade students of SMP Islam Gumukmas in the 20142015 academic year was 175 students. They were distributed into four classes
A-D. The distribution of the students can be seen on table 2 below.
Table 2. The Total Number of the Eighth Grade Students of SMP Islam Gumukmas in the 20142015 Academic Year.
No Class
Male Female
Total
1 VIII-A
21 23
44 2
VIII-B 20
24 44
3 VIII-C
23 21
44 4
VIII-D 23
20 43
Total 87
88 175
Source: SMP Islam Gumukmas Document
The total number of the research respondents was 88. The respondents of the experimental group were 44 students from VIII- A class, while the respondents of the
control group were 44 students from VIII-C class.
b. The Names of the Research Respondents
The names of the respondents for the experimental group VIII A and for the control group VIII C were enclosed in Appendix 18.
4.3 The Result of Homogeneity Test
The homogeneity test was conducted on Monday, January 12, 2015 until Wednesday, January 14, 2015. The homogeneity test was administered to know
whether the population was homogenous or heterogeneous. The respondents of this research were the eighth grade students of SMP Islam
Gumukmas in the 20142015 academic year that consisted of four classes A-D. The result of the homogeneity test was analyzed by using ANOVA formula see Appendix
8 Based on the calculation, the result of statistical computation was 22.66 while
the value of F-table in the 5 significant level was 2.70. From the calculation above, it was known that F-computation was higher than that F-table. It means that the
condition of the all grade eighth students of SMP Islam Gumukmas was heterogeneous or there was statistically significant different between the whole
classes. Therefore, the way in choosing the experimental and the control group should be taken from two classes that had the same or the closest mean difference. It was
found that grade VIII A and grade VIII C had the closest mean difference. They were 64,20 and 61,47 see Appendix 8. Then, by using lottery, grade VIII A was
determined as the experimental group and grade VIII C as the control group. As well as the research sample, the class for administering the tryout test, that was VIII B,
was chosen by using lottery.
4.4 The Result of the Try Out Test
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