3.7.3 Normality test
The researcher used normality test to know whether the data is distributed
normally or not. The hypothesis is formulated as follows: Ho: The data is distributed normally
H1: the data is not distributed normally In this script the criterion for the hypothesis is that: H is accepted if sign in
this case. The researcher uses the level of significance 0.05. If p0.05 in all test pretest and posttest. It proves that the Ho was accepted and all the data were
distributed normally.
3.8 Hypothesis Testing
The hypothesis testing was used to prove whether the hypothesis proposed in this
research is accepted or not. The data were statistically analyzed using statistically repeated measures t-test. To check whether the value is statistically significant to
support the writer’s hypothesis or not the t-distributor table is used which include the list of critical t-value that should be reached at certain degree of freedom and
significant level. In which t- value will support the writer’s hypothesis if the t-
value reached is higher or the same to the critical value stated in the table. The hypothesis was analyzed by using statistical computerization i.e repeated
measures t-test of SPSS version 13.0 in which the significance was determined by p, 0.05. In other words, H was approved if sig p.
V. CONCLUSIONS AND SUGGESTION
After computing and interpreting the data gained of research presented at the previous chapter, in this chapter the researcher presents conclusion and
suggestion. In reference to the result of the research some conclusions and suggestions are derived as follows:
5.1. Conclusion
1. There is difference of students’ speaking ability score after being taught
through STAD. The difference of students’ speaking ability score between before and after being taught through STAD is 20 point. It can be
seen from the mean score of pre-test 60.3 and post-test 80.3. 2. There is a significant increase
of students’ speaking ability score after being taught through STAD. The significance is proved by the result of
hypothesis testing. The result shows the value of the two tail significant
α
= 0.000 in which the significant improvement is determined by
α
0.05
.
It means that the H is approved.
3. The highest improvement
of students’ speaking aspects was in grammar. It was because the students gave more attention in this aspect during
learning process. They arranged sentences in a good order and always
improved their grammar while practicing the dialogue. 5.2. Suggestion
Based on the finding, some suggestions are proposed as follow: 1. Teacher should have more time for adapting STAD technique or even the
available time as efficient as possible. The teacher as motivator should always encourage student to express their ideas in better pronunciation by
giving much oral activity practice. 2. In implementing STAD teaching technique in speaking the English
teacher should manage the class, the time allocation and grouping the learners. The English teacher should realize that this technique requires
many supporting media such as: tape recorder, video, picture and dialogue, so the teacher is required to be well prepared.
3. The teacher should explain the activity clearly. It is batter to make sure that the students know what they have to do with STAD teaching
technique and give chance to the learners to ask some questions about the learning process. And he needs to remind the students to cooperate and be
active in the learning process.
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