Open AccessQUICK ESTIMATES OF THE RELATIVE EFFICIENCY OF TWO TESTS AS A FUNCTION OF ABILITY LEVEL 1
Author(s) -
Lord Frederic M.
Publication year - 1973
Publication title -
ets research bulletin series
Language(s) - English
Resource type - Journals
eISSN - 2333-8504
pISSN - 0424-6144
DOI - 10.1002/j.2333-8504.1973.tb00852.x
Subject(s) - trait , measure (data warehouse) , statistics , simple (philosophy) , mathematics , function (biology) , efficiency , econometrics , computer science , data mining , biology , philosophy , epistemology , evolutionary biology , estimator , programming language
When comparing two tests that measure the same trait, an overall comparison is not enough. Separate comparisons should be made at different levels of the trait. A simple, practical, approximate formula is given for doing this. The adequacy of the approximation is illustrated using data comparing seven nationally known sixth‐grade reading tests.