CHAPTER IV RESULT OF INVESTIGATION
This chapter shows the result of the study, which present discussion on the experiment, the difference between two means, t-test, and research findings.
4.1 Discussion of the Experiment
4.1.1 Try – Out test The writer held the try – out test to 20 students who have the same grade,
which are eight-year students. 10 students have done try-out by using pictures, and other 10 students have done try-out without using pictures.
4.1.2 Validity There are five components of scoring analysis in writing descriptive
paragraph and the writer found that they are all valid. Such as for the item analysis on fluency for the experimental group instrument was obtained 0,9919 and for the
control group instruments 0,7801 for a = 5 with N = 33, it will be obtained r
table
= 0,6320. Since the result of the instrument validity on both groups were higher than the critical value. It means that the instruments were valid. See appendix 2
and 7. 4.1.3 Reliability
The computing of reliability of the experimental and control group instruments were obtained 0.926 for the control group instrument and 0.920 for
the experimental group for a = 5 with N = 33 it will be obtained r
table
= 0,632.
Since the result values 0,926 and 0,920 were higher than the critical value 0,632, it means that the instruments were reliable. See Appendix 5 and 10.
4.1.4 Discriminating Power
After computing the discriminating power of five items in writing a descriptive paragraph showed that the items were too easy and not too difficult. See
appendix 4 and 9. 4.1.5 Difficulty
level The result of the difficulty level analysis of the five items in writing
descriptive paragraph showed that the items were too easy and not too difficult. see appendix 3 and 8
4.1.6 Pre – Test The experimental students were given a pre-test on 6 November 2007 and
the control level students were given pre-test on 8 November 2007. There were 5 keywords and a picture of artists for each student. They were asked to make
descriptive paragraph based on the pictures given. 4.1.7 The Experimental treatment.
Before conducting the treatments for the experimental group, the writer had prepared and arranged a teaching design. The use of this design eased the
writer in the process of teaching descriptive text using pictures as the main goal in this study.
The design of the experimental design is as follows : Table 4.1
Experimental Design
Y
a
X Y
b
Pre-test - Introduction - Topic 1 = Explanation about descriptive text social
function, grammatical pattern, and schematic structures
- Topic 2 = Making descriptive text by using picture artists
- Topic 3 = Making descriptive text by using picture one of hobbies fishing picture.
- Topic 4 = making descriptive text by using pictures artists.
Post-test
Y
a
-X Y
b
Pre-test Taught by using explanation Without using pictures
Post-test
4.1.8 Post – Test Post – test is conducted after treatment. Here for the experimental group,
pictures were used as aid in teaching writing descriptive paragraph to students. For the controlledl group, the explanation is used in teaching descriptive writing.
Post-test is conducted to measure the students’ abilities after the treatment. First, of all, the writer distributed the test papers to the students, she asked to students to
do the test in 40 minutes.
When the time was over, she asked the students to collect the test papers. After that, she scored the test and analyzed the result. The result of the both pre
and post-test can bee seen in appendix.
4.2 The Test Result
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