And then, the criteria used as follows: 1. If t-test t
o
t-table t
t
in significant degree of 0.05, Ho null hypothesis is rejected.
2. If t-test t
o
t-table t
t
in significant degree of 0.05, Ho the null hypothesis is accepted.
C. Interpretation of the Data
In the description of the data which was taken from 39 students of experimental class, the writer could explain briefly about the data got from the
students before they were analyzed. The description of the experimental class which has the mean of pre-test 59.28 before using pictures series. After giving
4 times treatments for experimental class using pictures series, the writer got the mean of post-test 78.61. So, the writer got the mean of gain score 19.33.
The smallest score in the pre-test was 48 and the highest score was 66. The data showed in post-test that the smallest score was 74 and the highest score
was 80. It can be summarized that the lowest and the highest scores in post- test were higher than pre-test.
Meanwhile, from the description of score in controlled class which was the writer got the mean of pre-test 60.84. In this class, the writer did not give
the students pictures series, but the writer only give a theme to writing narrative text. After giving 4 times treatments without using pictures series,
the writer got the mean of post-test 76.58. The writer got the mean of gain score was 15.79. It means that the gain score of experimental class was higher
in the value 16 than controlled class. The smallest score in the pre-test was 52 and the highest score was 71. The data showed in post-test that the smallest
score was 72 and the highest score was 82. It can be summarized that the lowest and the highest score in post-test were also higher than pre-test.
Before testing the hypothesis, the writer analyzed the normality and homogeneity of the data. The purpose of analyzing the normality was to see
whether the data got in the research has been normally distributed or not. The result of normality can be seen by comparing the value of T
max
to T
table
.
Meanwhile, the purpose of analyzing the homogeneity was to see whether the data sample in both experimental and controlled class were homogenous
or heterogeneous. In the analyzing the normality, the result showed that both the data of pre-test and post-test in controlled class were distributed normally.
According to criteria of the test, it can be seen in the result that T
max
pre-test and post-test T
table
0.123587 and 0.160318 0.161. Both the data of pre- test and post-test in experimental class also showed that they were distributed
normally. According to criteria of the test, it can be seen in the result that T
max
pre-test and post-test T
table
0.160357 and 0.155467 0.161. It means that all the data in both pre-test and post-test of experimental and control class
were distributed normally. The next result that the writer got was from the calculation of homogeneity. The result showed that F F
αn1-1, n2-2
5.514 1.992. Based on the criteria, it means that the sample in experiment class and
control class were homogenous. The final calculation was testing the hypothesis. This was the main
calculation to answer the problem formulation of this research that whether there is significant different between
students’ writing skill in narrative text at controlled class without using pictures series and
students’ writing skill in narrative text at experiment class which using pictures series. The writer used
T- test formula in the significance degree α of 5. The result showed that t-
test t
o
t-table t
t
5.514 1.992. It means that t-test was higher in the value 5.514 than t-table. So, the null hypothesis Ho is rejected. It means that
alternative hypothesis H
a
is accepted that there is a significant difference between students’ writing skill in narrative text by using pictures series and
without pictures series.
42
CHAPTER V CONCLUSION AND SUGGESTION
A. Conclusion
Based on the analysis result of this research, showed that the result of T- test formula to test the hypothesis of this research. The result showed that in
significance degree of 5, t
test
t t
table
t
t
5.514 1.992. It means that the result of t
test
was higher than the result of t
table
. So, the null hypothesis H is
rejected. It means that the answer of research problem was proven that there is a significant difference between students’ writing skill in narrative text by
using pictures series and without using pictures series.
B. Suggestion
After the writer carried out the research, she would like to give some suggestion related to the research findings and discussion. The result of this
study showed that it is effective to be applied in teaching and learning process. There are some points that the writer might suggest:
1. The teacher should use pictures series towards students’ writing skill in
narrative text as a media to use in their writing. So students can produce better writing.
2. The teachers should motivate their students to keep learning and
writing use a media. It is make the students more interested to create the sentences in writing narrative text which is unity, cohesive and
clarity based on the pictures series. 3.
The teacher should be more creative to find out the various themes of the narrative text
. The narrative text is not only found at students’ guide book, but the teacher can also find it out in the narrative text
collection in internet. It is better if the teacher select the story in narrative text that is interesting for students.
43
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