d
=
. − . .
=
. .
=
0,597
Therefore, the calculation of effect size was 0.597 medium effect.
Table 4.13 the Result of Experimental and Control Class Post-test
Statistic Experimental
Controlled
Mean X 78.25
72.9 Variance S
2
70.48 90.65
S gab 8.98
t – value
2.47 t
– table 1.684
Effect Size 0.597
The table shows the statistic calculation of the research. The mean score of experimental class is 78.25 and the mean score of control class is
72.9. The variance score for experimental class is 70.48 and for control class is 90.65. Additionally the standard deviation for both classes is 8.98.
Then, the result of t-value is 2.47. It is higher than t-table, 1.684. Moreover, the effect size is 0.597. It is indicated as medium effect.
C. Data Interpretation
After calculating the data, the writer found her hypothesis. Based
on the calculation, the hypothesis test states:
a. If �
�
≤ �
�
, it means that H is accepted and H
a
is rejected.
b. If �
�
�
�
, it means that H is rejected and H
a
is accepted.
As the result of the writer’s calculation, the writer gained the t
value
was 2.47 while t
table
was 1.684. Moreover, it concluded that t
value
2.07 t
table
1.684 or H is rejected and H
a
is accepted. Therefore, there was a significant effect of using inductive technique on
students’ mastery of comparison degrees.
On the other hands, after the writer found the result of t-test which proved a significant effect
of using inductive technique on students’ mastery in degrees of comparison, the writer used Statistic Calculators The
Effect Size Cohen’s d Calculator for a Student t-Test to know how large the effect of inductive technique applied in the learning process of
comparison degrees in the class is. The result of the effect size Cohen’s d
was 0.597 and as stated in table 3.2 on chapter three that was medium effect. Therefore, inductive technique has medium effect size in the class
on students’ mastery of comparison degrees. Both of those classes from pre-test and post-test scores got
normality and homogeneity data which the value p significant α
=0.05. The gained hypothesis test using t-test with significant 0.05 showed that t
value
2.47 t
table
1.684. It concluded there was a significant effect using inductive technique as a treatment in the experimental class on
students’ mastery in degrees of comparison. Furthermore, based on the effect size range of Cohen that found a medium effect by using inductive
technique on students’ mastery in degrees of comparison was 0.597. Degrees of comparison are part of grammar that should be learnt. It
tells about comparison between adjective or even adverb sometimes. The students feel confused to learn it because it has many parts and rules.
Inductive technique treatment in the experimental class gave a chance to the students to be familiar with some examples meaningful in their life.
The result of the post-test showed that there was a significant difference between experimental and control class. The experimental class
students got higher score than control class students because the experimental class were taught by using inductive technique but the
control class were taught without using inductive technique. The result above is related to the previous study conducted by
Zakiyatul Fuadah with the title “The Comparative Study of Using Deductive and Inductive Techniques in Teaching The Present Continous
Tense ” A Case Study in Mts. Syafi’iyah Pulorejo Ngoro Jombang East
Java. Although the study found that inductive technique cannot improve the students’ present continuous mastery but in this study, inductive
technique was effective in teaching degrees of comparison. As the conclusion, the description stated in this chapter told us that
the calculation scores of post-test in experimental class given treatment of inductive technique had higher scores than control class taught without
inductive technique. Therefore, there was a signific ant effect on students’
achievement in mastery degrees of comparison by using inductive technique.
45
CHAPTER V CONCLUSION AND SUGGESTION
A. Conclusion
Based on the findings of the research, the result of the statistical hypothesis on significance level
α=0.05 showed that
t
value
was higher than t
table
2.47 1.68, thus the H Null hypothesis was rejected and H
a
Alternative hypothesis was accepted. Besides, the main effect size used in this research is to know the strength of inductive technique as a treatment on
students’ mastery in the degrees of comparison by statistical calculators The Effect Size Cohen’s d Calculator for a Student t-Test
. Based on the calculation, it was found 0.597. As stated in the category of table, it means
medium effect. Therefore, inductive technique is effective in teaching degrees of comparison at the eighth grade students of SMP IT Cordova.
B. Suggestion
Based on the result of the study, the writer gives suggestions as follows: a. English teachers should improve their knowledge of English language
method and technique in teaching and should be creative and confident in the teaching and learning process.
b. For other researchers, the result of this study can be used as reference or basic information to do the further research and this technique can be
applied in their classroom for other grammar material or this material can be applied by using other teaching technique.
