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QUICK ESTIMATES OF THE RELATIVE EFFICIENCY OF TWO TESTS AS A FUNCTION OF ABILITY LEVEL
Author(s) -
LORD FREDERIC M.
Publication year - 1974
Publication title -
journal of educational measurement
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.917
H-Index - 47
eISSN - 1745-3984
pISSN - 0022-0655
DOI - 10.1111/j.1745-3984.1974.tb00996.x
Subject(s) - trait , statistics , measure (data warehouse) , mathematics , function (biology) , simple (philosophy) , econometrics , computer science , data mining , biology , philosophy , epistemology , evolutionary biology , 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.