4 Determine Standard deviation of variable Y with formula:
SD
2 =
�
∑ �
2
�
= �
1500 20
= √75 = 8.66
5 Determine Standard error of variable X with formula:
SE M
1 =
1
√−1
=
16 .84
√20−1
=
16 .84
√19
=
16 .84
4 .35
=
3.87 6
Determine standard error of variable Y with formula: SE M
2 =
2
√−1
=
8 .66
√20−1
=
8 .66
√19
=
8 .66
4 .35
=
1.99 7
Determine standard error means of differences mean of variable X and variable Y, with formula:
SE
M1-M2 =
�
1 2
+
2 2
= �3.87
2
+ 1.99
2
= √14.97 + 3.96
= √18.93= 4.35
8 Determining t
o
with formula: tₒ =
M ₁ − M₂
SE м
1
− м
2
=
16 .25
− 8 4
.35
=
8 .25
4 .35
= 1.896
9 Determining t-table in significance level 5 with Degree of
Freedom df: df = N1+N2 – 2
= 20 + 20 – 2
= 40 – 2 = 38 The value of df is 38 at degrees of significance 5 or t-table is
1.686 The writer tested the hypothesis based on the statistical hypothesis
as follows: 1. If t
o
t
t
: The null hypothesis Ho is rejected and the alternative hypothesis Ha is accepted. So, there is effectiveness of using Song in
learning vocabulary at 8
th
grade students of SMP Al Huda. 2. t
o
t
t
: The null hypothesis Ho is accepted and the alternative hypothesis Ha is rejected. So, there is no effectiveness of using Song in learning
vocabulary at 8
th
grade students of SMP Al Huda. 10 The testing of hypothesis
Ha = t
o
t
t
= 1.896 1.686 From the calculated above, the writer assumed a hypothesis of the research that
“Media Song is effective in teaching Vocabulary.” The result from calculating the data is t
o
= 1.896 and t
t
= 1.686. It means, t
o
is higher than t
t
in significant 5. So, the null hypothesis is rejected and the alternative hypothesis is accepted.
C. Interpretation of the Data
Based on the data collected that was taken from 20 students in experimental class, it could be explained that the mean of pre-test before using
media song in vocabulary is 58 with the lowest score of pre-test is 45 and the highest score of pre-test is 75. Meanwhile the mean of post-test after giving
treatments using song in learning vocabulary is 74.25 with the lowest score of post-test is 60 and the highest score of post-test is 85. So the writer got the mean
of gained score is 16.25. Meanwhile, the description of students’ score in control class that was
taken from 20 students, it could be explained that the mean of pre-test is 59.25 with the lowest score of pre-test is 45 and the highest score of pre-test is 70.
Meanwhile the mean of post-test after teaching vocabulary text with conventional method is 67.25 with the lowest score of post-test is 55 and the highest score of
post-test is 80. So the writer got the mean of gained score is 8. Based on the result of the mean score in each class the experimental and
the controlled class, it is obtained the t-observation t
o
is 1.896, meanwhile the t- tablet
t
of df is 38 in significance 5 is 1.686 It means t-observation t
o
is higher than t-table t
t
. So, the alternative hypothesis Ha is accepted and the null hypothesis Ho is rejected because t
o
t
t
1.896 1.686. So, there is significant difference between the students’ score in learning vocabulary by using song and
the students’ score in learning vocabulary without using song at the eighth grade
students of SMP Al Huda. It means that the using Song in teaching vocabulary to the eighth
grade students of SMP Al Huda are effective. Based on the data description, it can be observed that the scores of
students who have been taught by using Song as media in mastery vocabulary is
higher than the scores of students who have been taught without song as media. It proves that song as media is effective in mastery vocabulary.
There are benefits of media Song in teaching learning process that is an as alternative media, that helps the students memorize new words. The fun activities
which had been implemented in experiment class were successful to help students in increasing vocabulary. Furthermore, the students admitted that material that the
teacher was made can help students to memorize new word easily. Thus, most of the students in experiment class increased in mastery vocabulary. It can be seen
from their result in post test that most of the students in experimental class got the higher score in post-test than their score in the pre-test.
Based on this research, the writer can conclude that Song is simple, fun, and easy media in mastery vocabulary which gained students motivation in
mastery vocabulary. It is also effective to increase students’ vocabulary at eighth grade students of SMP Al Huda Jakarta.
47
CHAPTER V CONCLUSION AND SUGGESTION
In this chapter, the writer present conclusion of the research and suggestion for teacher.
A. Conclusion
Teaching vocabulary using songs is one of the alternative solutions that the teacher can use to teach vocabulary to their students. It makes students more
relax in learning new words, thus they can memorize them easily. After conducted the research, the writer concluded that t
is 1.896 t
table
of degree of significance 5 is 1.686. It means that alternative hypothesis is
accepted and the null hypothesis is rejected because the t is higher that t
t
t t
t
or 1.896 1.686. Therefore, it can be inferred that teaching vocabulary using songs is more
effective than teaching vocabulary without using songs.
B. Suggestion
From the conclusion above, the writer could give some suggestions for the English teacher who wants to teach vocabulary:
a The teacher should be well prepared, it means that before entering the classroom, the teacher should prepare the material that is going to be
taught to the students. b The English teacher should be more creative in applying teaching and
learning activities especially in learning new vocabulary. c The English teacher should be more understanding the condition of
their pupils, if the pupils in the classroom are bored with the teacher’s technique, the teacher has to find out the appropriate method or the
technique.
