mapping strategy for experimental group and quick reading method for control group. In the last meeting of treatment, the writer made several groups and the
groups were given the passage of narrative text and the questions related to the text and analyzed the text by using semantic mapping strategy.
The last, I gave post test on Thursday, May 23
rd
2013 for control group and on Friday, May 24
th
2013 for experimental group. The process of post-test was similar with the pretest. The students of both experimental and control groups
were given 25 questions of multiple choices. The posttest in this study had a purpose to measure the students’ reading achievement after getting treatments.
The students did their posttest through reading test.
4.3 The Result of Try-out Test
The analysis was to get a good instrument for investigation. The try out test was conducted on two meetings, the first meeting was conducted on Saturday, 11
th
May 2013 and the second meetings were conducted on Saturday, 18
th
May 2013. The VIII A was chosen as the try out group. The try out test is in form of multiple
choices items which consist of 35 questions. The following are the data analysis of the try out test to know whether the instrument that used in the research fulfill
the requirements a good instrument or not. The complete result of first try out analysis can be seen in appendix 3 and the second try out analysis can be seen in
appendix 4.
4.3.1 Validity of the Test
A good test has to be valid. Validity refers to the precise measurements of the test. The validity computation is consulted with the r table of Product Moment by
determining the significant level of 5 and n which is according to the data. If the rxy r table so the instrument is valid. For α = 5 and N = 32, r table = 0.349.
a The following is the example of counting the validity of item number 2 of first try out:
The value of
xy
r
is
:
xy
r
=
0.424 The item number 2 of the first try out test was valid since its r
xy
= 0.424 higher than critical value 0.349.
After all the item numbers were analyzed, there were 27 valid items from 35 items and the rest were invalid. They were presented in the following table:
Table 4.1 The Validity of the first Try-out Test
Criteria Number of Items
The Total Number Valid
2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 19, 21, 23, 24, 25, 26,
27, 30, 31, 32, 33, 34, 35 27
Invalid 1, 11, 13, 17, 20, 22, 28, 29
8
2 2
xy
736 21604
32 28
28 32
814 28
736 32
r
X
