CHAPTER IV DATA ANALYSIS AND DISCUSSION
This chapter presents the results of the research based on the data analysis and the discussion of the research findings.
4.1 Research Finding
In this study, the writer found the results in form of students’ writing scores. Those scores would be processed through statistical calculation. The detail
analysis of the research finding will be presented below.
4.1.1 The Pretest and Posttest Analysis
The data were collected from the students’ result of writing a text. The writer delivered a pretest and posttest for both the control group and experimental group.
After delivering a pretest, the writer calculated the mean or average score for both the control group and the experimental group. The average score or the mean for
the control group was 77.7, while the average score for the experimental group was 78.2. Here is the simple chart presentation from the pretest for both the
control group and the experimental group.
Chart 4.1 The Average Score in Pretest for the Control Group and the Experimental Group
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control group experimental group
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From the chart of the pretest, we can see that the results of the average score for both the control group and experimental group were almost the same. It
can be said that the ability of writing of both two groups were at the same level. The result of the pretest of the control group can be seen in appendix 7 p.71 ,
while the result of the experimental group lies in appendix 9 p.74 . After the writer conducted the posttest, she also calculated the average
score from the test. The results of the average score for the control group was 82.3, while the average score of the experimental group was 88. At a glance, it can
be seen that there was the difference result from the control group and the experimental group. Here is the chart that presents the result of the posttest for
both two groups. The result of the posttest of the control group can be seen in appendix 8 p.72 , while the result of the experimental group lies in appendix 10
p.75 .
Chart 4.2 The Average Score in the Posttest for the Control Group and the Experimental Group
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control group experimental group
From this result, it can be said that both groups ’ ability of writing
improved. It appears from the average scores. However, the control group and the experimental group have different level of achievement in writing.
From the data, the writer can conclude that the experimental group has higher achievement in writing than the control group. Here is the chart that
presents the difference results from the control group and the experimental group.
Chart 4.3 The Average Score for the Pretest and the Posttest of the Control Group and the Experimental Group
4.1.2 The t-Test Analysis
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