Introduction
The importance of tests, especially achievement tests, at any level of education cannot be ignored as they are the systematic procedures for measuring sample and students’ knowledge. They provide a proper feedback to teaching at all stages of learning. They become the major source for improving standards of education at any stage. According to Gay (1996), “tests provide the teachers and other officials with important information regarding the individual’s and group’s proficiency, provided that they are properly constructed. They also measure the current status of learners in the given area of knowledge or skills”. It has been defined by Sax (1997) in the following way: