Educational Assesment2

Educational Assesment2

Summary

The reliability of educational assessment procedures refers to the consistency with which a test measures whatever it is measuring that is, the absence of measurement errors that would distort a student's score. There are three distinct types of reliability evidence. Stability (test-retest) reliability refers to the consistency of students' scores over time. Stability reliability is usually represented by a test-retest coefficient of correlation between students' scores on two occasions, but can be indicated by the degree of classification consistency displayed for students on two measurement occasions. Alternate-form reliability refers to the consistency of results between two or more forms ...