Score Experimental Group
Control Group x
f f.x
f f.x
2 3
4 6
7 8
9 5
4 11
2 1
- 1
10 12
44 12
7 -
9 2
5 15
- -
2 -
4 15
60 -
- 16
- ∑
24 94
24 95
Mean
92 .
3 24
94 .
f x
f
96 .
3 24
95 .
f x
f
Table 4.1. The Pre Test Score of the Experimental Group and the Control Group
The table above shows that the mean scores of the experimental group and that of the control group are not far different. The mean score of the
experimental group is 3.92 and the mean score of the control group is 3.96 with 24 cases of each group. There were not any students of both groups who got the
maximum score 18. The maximum score of the experimental group was 9 and the minimum score of the group was 2. The Control group had the maximum score 8
and minimum score 2.
1.2. Data Presentation of the Post Test
The Post test was conducted after the treatment to both experimental and control groups. The table below shows the result of the post test of both
experimental group and control group.
Score Experimental Group
Control Group x
f f.x
f f.x
7 8
9 10
11 12
13 14
15 16
17 18
- -
- 1
4 3
2 -
2 2
4 6
- -
- 10
44 36
26 -
30 32
68 108
1 1
1 2
3 5
5 1
1 1
2 1
7 8
9 20
33 60
65 14
15 16
34 18
∑ 24
354 24
299
Mean 75
. 14
24 354
.
f x
f 46
. 12
24 299
.
f x
f
Table 4.2. The Post Test Score of the Experimental Group and the Control Group
Based on the table above, the mean score of the experimental group is 14.75 and the mean score of the control group is 12.46. Both groups had the
maximum score 18. There were 6 students of the experimental group who achieved the maximum score and there was 1 student of the control group got the
maximum score. The lowest score of the experimental group was 10 and the lowest score of the control group was 7.
1.3. Descriptive Statistics
The following table shows the descriptive statistics of the pre test and post test of both experimental and control groups.
N Minimum
Maximum Mean
SD Pre-ex
Post-ex Pre-con
Post-con
24 24
24 24
2 10
2 7
9 18
8 18
3.92 14.75
3.96 12.46
1.692 2.908
1.396 2.766
Table 4.3. The Descriptive Statistics
The number of students of each group was 24. The mean score of pre test of the experimental group was 3.92 and the control group was 3.96. The mean
score of post test of the experimental group was 14.75 and the control group was 12.46. For the post test mean score, the experimental group had higher score than
the control group.
2. Test Validity and Reliability
As stated in the previous chapter, a test has to be reliable and valid. A test is supposed to have face validity and content validity. A test is said to have face
validity if it looks as if it measures what it is supposed to measure Hughes;1989. A test is said to have content validity if its content constitutes the representative
sample of the language skills. In order to have face and content validity, the writer constructed the test based on the course objective as stated in the syllabus.
A test is said to be reliable if it has reliability coefficient approaching 1. The highest the coefficient approaches 1, the more reliable the test is. If the
measurement result is to be used for research purpose, score with modest
