Certain questions about the shape of item-test regressions are answered on the basis of data obtained from 103,275 examinees. Ten of the regressions obtained are shown in illustrative plots.
KeywordsEmpirical Study Public Policy Statistical Theory Illustrative Plot
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- Lord, F. M. A note on the normal ogive or logistic curve in item analysis.Psychometrika,30, 1965, 371–372.Google Scholar
© Psychometric Society 1965