ABSTRACT
The relative efficiency of test score y with respect to test score x is the ratio of their information functions: https://www.w3.org/1998/Math/MathML"> RE { y , x } ≡ I { θ , y } I { θ , y } . https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780203056615/d669de6a-43de-4879-97fb-c978825c4fe9/content/math_161_B.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/>
