improvement from the pretest or 9.86 – 14.99
P = 24.85
Based on that computation, it could be seen that the posttest 2 had
24.85 improvement from the pretest or 9.86 24.85 – 14.99
improvement from the pretest 1. Meanwhile, to know the percentage of the class that passed the KKM, it could be calculated as following:
F P = ── X 100
N 19
P = ── X 100 22
P = 86,36
From that calculation, the class percentage was 86.36. It means that in the cycle 2 there were 19 students who pass the KKM and there
were only 3 students were below the KKM. The class percentage of posttest 2 obviously showed some improvements from the previous test;
the improvement was 77.72 from the pretest 9.09 or 62.36 from the class percentage of posttest 1.
As a whole, the interpretation of the data results among the pretest, the posttest of cycle 1 and the posttest of cycle 2 were as following:
In the pretest, the mean score of students on grammar test before carried out Classroom Action Research CAR was 62.36. It is the
students’ grammar especially adverbial clause of time score before they used Berlitz Method. Meanwhile, the class percentage which passed the
KKM was 9.09. It means that that there were only 2 students who were able passed the KKM 75 and there were 20 students were out of the
target.
Furthermore, the mean score in the posttest of cycle 1 was 71.72. It meant that there were some students’ score improvement from the previous
test pretest, that was 9.35
71.72
–
62.36
.or 14.99. Meanwhile, the class percentage which passes the KKM in posttest 1 was 31. It showed there
were 7 students who passed the KKM and there were 15 students whose score still under KKM. However, it was still needed more improvement
because it could not achieve the target yet of success CAR, that was 75 or at least 15 students from the class percentage. That was why the writer
and the teacher continue to the second cycle. Next, the mean score in the posttest of second cycle was 77.86. It
showed the students’ improvement score 6,14 77.86 – 71.72 from the posttest 1 71.72 or 24.85 students’ improvement in the score percentage
from the pretest or 9.86 students’ improvement from the pretest 1. Meanwhile, the class percentage which passes the KKM was 86.36. It
means there were 19 students whose score passed the KKM and there were 3 students were under the target of KKM. This class percentage showed
some improvements 77.72 from the pretest 9.09 or posttest 1 31.38 in the class percentage. The posttest of cycle 2 has fulfilled the
target of Classroom Action Research CAR success, that was above 75 students could passed the KKM. Automatically, it could be said that the
Classroom Action Research CAR was success and the cycle was stopped.