improvement. Those are: first step is to calculate the mean score of test in post- test 2, it is used the formula:
Σ
x X =
n
2460 X =
29
X =84.82 From that calculation, the mean score of post-test 2 in the cycle 2 is 13.96
84.82 – 70.86 from the mean score of post-test in cycle 1.
Second step is to know the calculation of perc entage of students‟
improvement score. The writer used the formula: y2 - y
P = X 100
y
84.82 – 62.58
P = X 100
62.58
P = 35.53
From the computation above, it could be known that t he student‟s
score in the post-test 2 improves 16.19 35.53 - 51.72. from pre-test and 22.3 35.53 - 13.23 from the post-test in cycle 1.
Then the next step is to calculate the percentage from the students‟ score who pass the Minimum Mastery Criterion-Kriteria Ketuntasan Minimal
KKM in post-test 2. The writer used the formula: F
P = X 100
N
29 P =
X 100 29
P = 100
Based on absolute calculation above, it is known the percentage of students‟ who pass the Minimum Mastery Criterion-Kriteria Ketuntasan Minimal
KKM is 100.
It means that in cycle 2 there are 29 students‟ who pass the Minimum Mastery Criterion-Kriteria Ketuntasan Minimal and there are 0
students‟ are below the Minimum Mastery Criterion-Kriteria Ketuntasan Minimal KKM. The class percentage of post-test 2 obviously show some improvements
from the previous test, the improvement is 48.28 100 - 51.72 from the
pre-test. The highest score in this post-test is 95 and the lowest score is 70. The students‟ score who pass the Minimum Mastery Criterion-Kriteria Ketuntasan
Minimal KKM and who still below the Minimum Mastery Criterion-Kriteria
Ketuntasan Minimal KKM it can be seen in the diagram below:
D. Interpretation of the Test Result
Based on the result of pre-test, post-test 1, and post-test 2, the writer can interpret the data, and she also gave the diagram before describing the result of
pre-test,post-test
After that the writer can interpret the data result among the pre-test, the post-test of cycle 1 and the post-test of cycle 2 in the detail as following:
Before conducting the Classroom Action Research CAR, the writer gave the pre-
test to the students it is showed that the mean of students‟ score understanding of Vocabulary before using the Pictures is 62.58. meanwhile, the
class percentage which pass the Minimum Mastery Criterion-Kriteria Ketuntasan
Minimal KKM is 51.72. it means that there are only 15 students who pass the
10 20
30 40
Nilai 65 Nilai 65 KKM
Nilai 65
Result of Students Score in Post-test 2
The Result of Students Score in Post-test 2
5 10
15 20
25 30
35
Nilai 65 Nilai 65 KKM
Nilai 65 Pre Test
Post Test 1 Post Test 2
