5. Determining value of hypotheses testing
t
0 =
= Mean of the Gained Score of Experiment Class = Mean of the Gained Score of Controlled Class
= Standard Deviation of Experiment Class = Standard Deviation of Controlled Class
= Number of students in Experiment Class = Number of students in Controlled Class
6. Determining Degree of Freedom
df = degrees of freedom
= number of students of experiment class = number of students of control class
F. Statistical Hypotheses
Statistically, the hypotheses are expressed as follow: H
o
: μ
A
μ
B
H
a
: μ
A
μ
B
In which: H
o
: Null Hypothesis H
a
: Alternative Hypothesis
μ
A :
Students’ score in learning vocabulary by using flash card μ
B :
Students’ score in learning vocabulary by using audio media
And then, the criteria used as follows: If t-test t
o
t-table t
t
in significant degree of 0.05 5, it means that H
a
is rejected and H
o
is accepted. In other word, the use of using Flash Card is not effective in teaching vocabulary in the seventh grade of MTs N 13 Jakarta
If t-test t
o
t-table t
t
in significant degree of 0.05 5, it means that H
a
is accepted and H
o
is rejected. In other word, the use of using Flash Card is effective in teaching vocabulary in the seventh grade of MTs N 13 Jakarta
22
CHAPTER IV RESEARCH FINDING
A. Description of Data
The writer held field research by teaching and learning process. It was done into two classes; they are 7A as controlled class and 7D as experiment
class. By doing pre-test and post-test the data was gotten by the writer. Pre-test was given before the treatment began and post-test was given after the
treatment finished. The data is described into two tables. The achievements of students in the
first class were presented in table 4.1 and the achievements of students in the second class were presented in table 4.2.
1. Experiment Class
Table 4.1 The Score of the Individual Students of the Experiment Class
By Using Flash Card
Students Pre-Test
Post-Test Gained Score
Post-Test – Pre
Test 1
90 75
-15 2
70 95
25 3
62.5 60
-2.5 4
92.5 97.5
5 5
82.5 87.5
5 6
70 57.5
-12.5 7
77.5 90
12.5 8
80 87.5
7.5 9
90 87.5
-2.5 10
62.5 70
7.5 11
60 65
5
