3.9 Hypothesis Testing
Based on the theories and the assumptions, the hypothesis of this research was that using picture series was an effective strategy for teaching analytical
exposition text because it helped students in developing their idea so that their writing ability was increased. There was also a component of analytical exposition
that increased the most and it wa s “support for position”. The richer idea of
students after being taught by using picture series was put within this component in form of better argument.
In gaining the t-observed, the researcher used this formula:
t Observed=
D
MD : The mean difference
of students’ score
S
D
: The standard error of the difference. Then the result of the t-observed or t-value was compared with the result of the t-
table to determine whether the alternative hypothesis could be accepted or not. The hypotheses were elucidated as follows:
H : There was no significant difference before and after being taught by using
picture series. H
1
: There was a significant difference before and after being taught by using picture series.
V. CONCLUSIONS AND SUGGESTIONS
This chapter presents the conclusion and suggestions of this research. The researcher presents two main points to be concluded and two suggestions for improvement.
5.1 Conclusions
Based on the data gained in this research, it was concluded that the implementation of picture series wa
s effective to improve the students’ ability in writing. The improvement descriptions were presented below.
1. There was a significant difference on writing scores after applying picture
series in writing analytical exposition text. Based on the result of this research, it was revealed that there was statistically difference on scores
awarded on the pre test and the post test. The t
value
was 1.841 and the t
table
was 1.692 with the significance 0.05. Since the t
value
t
table
, it could be concluded that the null hypothesis was rejected and the alternative hypothesis
was accepted. 2.
Picture series was effective for teaching writing in form of analytical exposition text. The information served by pictures avoid boredom and a lack