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Nature and Sources of Data
The Influence of Time Upon Scores
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Actual 1926 Performance age groups Brightness Scores cent Coefficients of Correlation Columbia University column comparable computation Constant Group correlation obtained correspondence criterion cumulation Educational Battery Educational Psychology effects equation error of estimate error of measurement figures Five Tests four geography grade group tests improvement increase indicate individual Intelligence Quotient Journal of Educational Kelley McCall Arith mean T scores metic Mean metic Otis Arith mismeasured Multiple Correlations N.I.T. A Spell National Intelligence Test Nifenecker norms practice prediction based Present Scaling present study Previous Testings probable errors raphy Woody raw scores reliability coefficient retests schools concerned scores and quotients shown sigma simple averaging Simple Optimum standard deviations standard error Stanford Binet Statistics Successive Testings survey Tables XXII Teachers College test forms Test Mean test scores tests and types tests given Thorndike tion types of score unselected twelve-year-olds variability Woody-McCall year-grade yield York City York Geog