of the research and the data that is taken from separated group from on population. In order to find out whether or not the basic ability of control and experimental
group is the same, the writer uses homogeneity test of pretest.
Where: F
= homogeneity = greatest variance
= smallest variance Winer, 1962: 38
Since F value F table, the experimental and the control group had the same variance and it meant that it was homogen.
3.6.3 T-test
The T-test analysis was used to count whether there was a significant difference between experimental and control group after being given the treatment. I count
the standard deviation first. The standard deviation obtained is used to count the t- value. The formula for counting the standard deviation:
s =
2 2
1 1
1
2 1
2 2
2 1
n n
s n
s n
Where: s
= standard deviation s
2
= variance
n
1
= the number of students subject participating in the test in experimental group
n
2
= the number of students subject participating in the test in control group
To find out the t-value of the significant difference of the post test result between the experimental group and control group, the formula used is:
t =
n n
x x
s
2 1
2 1
1 1
Where, t
= t-value = the average score of experimental group
= the average score of control group s
1
= standard deviation of the experimental group s2
= standard deviation of the control group n
1
= the number of students subject participating in the test in experimental group
n2 = the number of students subject participating in the test in control
group Sudjana, 2005: 243
x
1
x
2
57
CHAPTER V CONCLUSIONS AND SUGGESTIONS
This final chapter presents conclusions derived from the whole discussion and analyses conducted in the previous chapters of the study. This chapter also covers
some suggestions concerning the study for the students, English teachers, and next researchers.
5.1 Conclusions
According to the result of the data analyses in the previous chapter, it can be concluded that Give One, Take One is effective to improve students‟ writing skill
of descriptive text. From the data analysis, the mean of the experimental group score was improving higher from 60.175 to 73,25 than the control group from
60,15 to 64,525. By using t-test formula, we could see that the t value was 10,929 and the t table was 1.67. Since the t-value t table 10,929 1.67 it means there
was a significant difference in the achievement between students who were taught using Give One, Take One and students who were taught using conventional
teching. There were some advantages in using Give One, Take One technique for
teaching writing a descriptive text. First, students were conducting a new teaching learning process that they never known before, so they will be very curious and
exciting doing this technique. Second, Give One, Take One technique can be used to encourage students to share ideas and examples. It was very useful to enrich
their vocabularies; correct their grammatical; and make a proper organization,
