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In this study, the control group used pictures and the experimental group used Five-Minute Activities.
3 Post-test
After having the treatment, the students were asked to do post-test. This test was used to find out the significant difference between the students’
ability in writing a descriptive text before and after the treatment; and whether or not there is significant difference between the group taught by
using Five-Minute Activities and taught by using pictures.
3.7.1 Analytical scoring
I chose the essay test as my instrument research. It means that the score depends on the capability of me. Therefore, I must have guidance of evaluation
appropriately. As I told before on the chapeter two about the scoring guidance, there are two scoring guidances : First is the analytical scoring, the rating scale as
proposed by Brown 2004: 243, that is an analytical scoring scale specified five major categories and a description of five different levels in each category,
ranging from unacceptable to excellent. Second, the scoring which is based on the analytic method. This method is made to inform the students about their
achievement Heaton, 1975:95. In this study, I used the rating scale as proposed by Heaton Grid. I used
that scoring scale because it gives a description of score in each criterion clearly and it is very suitable to score the writing test. The score ranges were used for
evaluating each writing test. Getting all writing test scored, it was the time for me
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as the researcher to totalize it into the final score. This score would be the studens’ score for their writing skill and it would help me classifying the students’
writing proficiency. “There are 5 items scored, they are form, grammar, style, content and
mechanic. Each is scored 5, then the maximum score is 25. This method is made to inform the students about their achievement”Heaton, 1975:95. The result is
raw scores so that it is necessary to multiply them by 4 to get more meaningful numerical data. The obtained rating scale ranges from1-100. Thus I could take an
example for students who got 25 of raw score. Its score was multipled by 4. It means that shehe got 100.
3.7.2 t-Test
t-Test was used to determine the significance of the test that had been given. It means that whether or not test given is more effective in teaching descriptive text.
The writer used the formula of Arikunto 2006: 311 as follows:
⎥ ⎥
⎦ ⎤
⎢ ⎢
⎣ ⎡
+ ⎥
⎥ ⎦
⎤ ⎢
⎢ ⎣
⎡ −
+ +
− =
∑ ∑
y x
y x
N N
N N
Y X
My Mx
t 1
1 2
2 2
Where, t =
t-test M
x
= the difference gain of pre test and post test of the experimental group M
y
= the difference gain of pre test and post test of the control group
∑
X = the sum of the difference gain of pre test and post test of the experimental group
∑
Y = the sum of the difference gain of pre test and post test of the control group N
x
= the number of the students of the experimental group N
y
= the number of the students of the experimental group
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The result of t
test
calculation then would be compared to the value of t
table.
This study will be signed as significant if the value of t
test
is higher than t
table.
3.8 Method of Reporting the Results