G. Technique of Data Analysis
The collected data found in this research are analyzed qualitatively and quantitatively. It means that all the data gathered from the observations during
teaching learning process, questionnaire, and interview before and after classroom action research are analyzed qualitatively. While the data obtained from tests pre-
test and post-test are Analyzed descriptive quantitatively percentage. In completing the numerical data, the writer tries to get the average of
students’ speaking score within before the the implementation and every cycle in order to know how well the role play technique in the classroom.
It is the formula;
3
X =
� �
X : mean N : number of students
x : individual score Then, the writer tries to get the class percentages which pass the the target
score of the minimal mastery level criterion-Kriteria Ketuntasan Minimal KKM. The KKM that must be attained considering speaking subject is 65 sixty-five
which is adapted from the school agreement SMPN 251 Jakarta. It is the formula:
4
F P =
X 100 N
P : the class percentage F : total percentage score
N : number of students
3
Sudjana, Metoda Statistika, Bandung: PT. Tarsito, 2002, p. 67.
4
Anas Sudijono, Pengantar Statistis Pendidikan, Jakarta: PT. Raja Grafindo Persada, 2008, p. 43.
The last , the writer analyzes the students’ speaking score from pre-test up to post-
test. It used to know whether students improve their score or not. She uses the formula:
y1 – y
P : percentage of students’ improvement
P = ─── X 100
y : pre-test result
Y
y1 : post-test 1
H. Criteria of the Action Success
Classroom Action Research CAR is able to be called successful if it can exceed the criteria which has been determined. In this study the research will
succeed when there is 75 of students could pass the assessment score ≥ 65 based
on the minimal mastery level criterion-Kriteria Ketuntasan Minimal KKM which is adapted from the school agreement SMPN 251.
In addition, the success of the action is not only measured with the achievement students’ speaking score, but also the role play technique can
motivate the students and they become more actively in learning process. If the criterion of the action success achieved, it means that the next action of the
Classroom Action Research CAR would be stopped, but if this condition has not been reached yet, the alternative action would be done in the next cycle.
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