The next step is determining t
observed:
Finally, the writer calculated t
table
t
t
in significance level of 5 with degree of freedom df:
Based on the degree of freedom df, the writer gained t-table by the degree of significance 5 is 1.67
3. Test of Hypotheses
To prove the hypotheses, the data gained from the experimental class and controlled class was calculated by using t-test formula with the assumption as follow:
t
o
t
t
: The alternative hypothesis H
a
is accepted and the null hypothesis H is
rejected. It means that the use of Picture Word Inductive Model is effective on students‟ ability in writing recount text to the eighth grade students of
SMP Negeri 3 Tangerang Selatan. t
o
t
t
: The alternative hypothesis H
a
is rejected and the null hypothesis H is
accepted. It means that the use of Picture Word Inductive Model is not effective on students‟ ability in writing recount text to the eighth grade
students of SMP Negeri 3 Tangerang Selatan. By comparing the value of t
o
= 2.39 and t
t
= 1.67 or 2.391.67, the writer made the conclusion of the hypothesis that t
o
is bigger than t
t
. So, the alternative hypothesis H
a
is accepted and the null hypothesis H
o
is rejected. It means there is significance difference between the result of using Picture Word Inductive Model
PWIM and without using it.
B. Data Interpretation
Based on data description, the students‟ writing ability at the eighth grade
students of SMP Negeri 3 Tangerang Selatan is improved, especially by using Picture Word Inductive Model. In the description of the data which was taken from 30
students of experimental class has the mean of pre-test 57.53 before using Picture Word Inductive Model. After giving 4 times treatments for experimental class using
Picture Word Inductive Model, the writer got the mean of post-test 73.73. So, the writer got the mean of gained score 16.43. The smallest score in the pre-test was 30
and the highest score was 86. The data showed in post-test that the smallest score was 50 and the highest score was 96. In conclusion, the lowest and the highest scores
in the post-test were higher than those in the pre-test. Besides that, the description of the mean of the controlled class which was
taken from 30 students was 59.10 in pre-test score without usingPicture Word Inductive Model. After giving 4 times treatments for controlled class without using
Picture Word Inductive Model, the writer got the mean of post-test 69.30. So, the
