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Graphs	2
Mathematical Models	2
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Adaptive Testing	1
Computer Assisted Testing	1
Computer Simulation	1
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Educational and Psychological…

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Dodd, Barbara G.	1
Hopkins, Kenneth D.	1
Weeks, Douglas L.	1

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Tests for Normality and Measures of Skewness and Kurtosis: Their Place in Research Reporting.

Peer reviewed

Hopkins, Kenneth D.; Weeks, Douglas L. – Educational and Psychological Measurement, 1990

This paper makes the point that descriptive and inferential measures of nonnormality and graphic displays of the frequency distribution of important variables should be routine in research reporting. This point is particularly true for research involving measures with nonarbitrary metrics where the distribution shape is unaffected by measurement…

Descriptors: Equations (Mathematics), Graphs, Mathematical Models, Research Reports

Computerized Adaptive Testing Using the Partial Credit Model: Effects of Item Pool Characteristics and Different Stopping Rules.

Peer reviewed

Dodd, Barbara G.; And Others – Educational and Psychological Measurement, 1993

Effects of the following variables on performance of computerized adaptive testing (CAT) procedures for the partial credit model (PCM) were studied: (1) stopping rule for terminating CAT; (2) item pool size; and (3) distribution of item difficulties. Implications of findings for CAT systems based on the PCM are discussed. (SLD)

Descriptors: Adaptive Testing, Computer Assisted Testing, Computer Simulation, Difficulty Level