Place and Time of the Study

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.