2. Teaching
The writer did the teaching learning process three times
1
.
3. Test
The instrument of this research is the story map test which consisting of 15 questions. Type of questions is essay. The test was made by the class
teacher. The writer gave the students namely pre-test and post test. Pre-test
was given before she began the teaching and learning process. The pre-test is similar in form to post test that was given after three times in the
instruction. Firstly, the class was given the pre-test before the lesson is begun to
know the students knowledge of the materials that will be taught. Secondly, the writer gave the materials about reading comprehension
by using story mapping in presentation. She did teaching for three times. The last step in the experiment, the writer gave the post test to the
class. Post test was given after the lesson is finished, in order to find the students understanding the materials.
D. The Technique of Data Analysis
Data analysis is the last step in the procedure of experiment, in this skripsi the writer use “t” test
2
. The writer has to seek the significance differences result between pre test
and post test by using formula as followed: t
o
= M
D
SE
MD
The writer has to seek score of t as followed: 1. Seek D Difference between score of variable I X and score of
variable II Y and then D = X – Y. 2. Add D then getting
∑D.
1
See Appendix 3 Lesson Plan p. 50-63
2
Anas Sudjiono, Pengantar Statistik Pendidikan, PT Raja Grafindo Persada: Jakarta, 2007, p. 305
3. Seek Mean from Difference by using formula: M
D
= ∑D
N 4. Seek the Standard of Deviation from Difference SD
D
by using formula:
SD
D
= ∑D
2
- ∑D
2
N N
2
5. Seek the Standard Error from Mean of Difference by using formula: SE
MD
= SD
D
N - 1 6. Seek t
o
by using formula: t
o
= M
D
SE
MD
Then, the calculation of T
hit
is compared with T
table
with degree of significance of 1 and 5 with test criteria as follows:
• If T
hit
T
table
so Ho is rejected and Ha is accepted. • If T
hit
T
table
so Ho is accepted and Ha is rejected.
E. Data Description
To know the result of the test, the writer makes the table of students’ score as follows:
Table 4 The Result Calculation of Pre Test and Post Test
Students Pre-Test Score X
Post-Test Score
Y D = X - Y
D
2
= X –Y
2
1 50 77 -27 729
2 63 87 -24 576
3 67 93 -26 676
4 82 75 7 49
5 73 93 -20 400
6 73 93 -20 400
7 62 75 -13 169
8 78 92 -14 196
9 62 92 -30 900
10 73 87 -14 196
11 73 85 -12 144
12 73 87 -14 196
13 70 83 -13 169
14 75 82 -7 49
15 63 78 -15 225
16 70 77 -7 49
17 70 77 -7 49
18 77 77 0 0
19 73 80 -7 49
20 73 82 -9 81
21 73 93 -20 400
22 70 83 -13 169
23 60 67 -7 49
24 70 83 -13 169
25 70 73 -3 9
26 65 72 -7 49
27 57 67 -10 100
28 67 73 -6 36
29 55 80 -25 625
30 65 73 -8 64
N = 30 -
- -384
∑D 6972
∑D
2
From the description above, the writer get the students’ pre-test score the class with minimum score is 50 and maximum score is 82, mean is 68.4,
median is 70 and mode is 73. After they are taught by using story mapping, the writer get the students’
post test score of the class with minimum score is 67 and maximum score is 93, mean is 81.2, median is 81, and mode is 77.
F. Data Analysis
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