of the assessment.
5
A test aimed at providing true measurement of the particular skill that is intended to measure.
Validity was a complex concept; it is reminding the teacher on how to make a good test. The researcher would use face validity in order to gain the validity.
Mousavi suggested that “Face validity refers to the degree to which a test looks right and appears to measure knowledge or ability it claims to measure.”
6
This validity cannot be empirically tested by the teacher or even a testing expert. It
purely see by the “eye of beholder” or in another word by the test-takers and test- giver in which they can intuitively understand the instrument. It meant that the
validity depended on the view of both test takers and test-giver by looking at its surface, appeal and perceived, for example the instruction of the test.
4. Technique of Data Analysis
Before the test is given to the students in the pre and posttest, it will be tested in. After make an instrument, it will be tried out. The result from tryout-test
will be analyzed first by the test of normality and test of homogeneity. After doing pre-test, students would do peer assessment; they will correct their peer’s
writing. This process is expected to give a different result in the posttest. Then, the students did a posttest and it will be analyzed by the researcher. The data will be
analyzed by assumption testing and hypothesis testing. The kind of assumption testing was normality test and homogeneous test. It is calculated due to know the
next step of analyzing the data which whether using parametric test or non- parametric test.
1. Normality Test
Normality test is used to know whether the data come from the normal distribution or not. In this study, the researcher tends to use SPSS version 22
to find out the normality of the data by followed these steps:
5
Douglas Brown, Language Assessment Principles and Classroom Practice, New York: Pearson Education Inc., 2004, p. 22.
6
Ibid., pp. 26 27.
a. Open SPSS Program b. Input the data to the data view by first fill the variable view with write
down X as score of pre-test or post-test score and Y as the kind of class c. Click Analyze Descriptive Statistics Explore
d. Drag the X to the Dependent List and Y to the Factor list e. Click Plot checklist Normality plots with test ok
The criteria of determining the normality of the data was: a. If t
value
was smaller than t
table
t
value
t
table
, it meant that H was accepted
and H
1
was rejected b. If t
value
greater than t
table
t
alue
t
table
, it meant that H was rejected and H
1
was accepted.
2. Homogeneity Test
Homogeneity test is used to know whether the data come from the homogeneous variance or not. To calculate the data, the researcher use SPSS
version 22 as follows: a. Open the SPSS program
b. Input the data to the data view by first fill the variable view with write down X as score of pre-test or post-test score and Y as the kind of class
c. Click Analyze Compare means One-way ANOVA d. Drag the X the Dependent List and Y to the Factor list
e. Click Option checklist Homogeneity of Variance Test Ok The criteria of determining the homogeneous of the data was:
c. If t
value
was smaller than t
table
t
value
t
table
, it meant that H was accepted and
H
1
was rejected d. If t
value
greater than t
table
t
alue
t
table
, it meant that H was rejected and H
1
was accepted.
