Test equating is a statistical process providing the interconversion of the scores obtained from different test forms
measuring the same structure. Equalized scores have the same meanings regardless of when and to whom the test
was applied. Therefore, scores obtained from a test form can be compared to the scores obtained from another test
form (Kolen and Brennan, 2004). In the event that the students are simultaneously given different forms of a test and
the difficulty level between the forms are not equal, it is possible that the individuals given the difficult test get
lower scores than the individuals given the easy test. This situation makes it difficult to compare the points obtained
from different test forms. Test equating prevents the possible unfairness against individuals given the difficult test
and eliminates the bias problems caused by the difference in the difficulty levels of the test forms (Angoff, 1971;
Cook and Eignor, 1991; Hambleton, Swaminathan and Rogers, 1991).