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Analysis of Iowa Data I: Initial Study and Findings. Research Report 80-1.
Samejima, Fumiko; Trestman, Robert L. – 1980
The first step of the data analysis with respect to the eventual application of the various new methods in latent trait theory is here initiated. The data are a set of approximately 500 item responses of each of 7,439 examinees to the Iowa Tests of Basic Skills, Form 6, on one of three difficulty levels, which correspond to the ages of 11, 12 and…
Descriptors: Achievement Tests, Data Analysis, Goodness of Fit, Junior High Schools
NAEP TRP Task 3e: Achievement Dimensionality, Section A.
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Abedi, Jamal – 1994
This study investigated the dimensionality of mathematics subscale scores from the National Assessment of Educational Progress for the assessment's Technical Review Panel, specifically for the data from the 1990 and 1992 main assessment in relation to students' instructional and noninstructional background variables. Discriminant analysis was…
Descriptors: Achievement Tests, Discriminant Analysis, Elementary Secondary Education, Factor Structure
Comparison of the Estimated Item Parameters of Shiba's Word/Phrase Comprehension Tests Obtained by Logist 5 and Those by the Tetrachoric Method.
Samejima, Fumiko – 1984
The use of a three-parameter logistic model for applying latent trait theory has become more popular because of the availability of computer programs. The program Logist 5 can be used not only for the item parameter estimation in the three-parameter logistic model, but also in the two parameter logistic model by setting the third parameter equal…
Descriptors: Correlation, Elementary Secondary Education, Equated Scores, Estimation (Mathematics)
Using National Survey of Postsecondary Faculty Data To Form Disciplinary Specific Comparative Productivity Figures for Public Institutions with Significant Graduate and Research Programs. AIR 2000 Annual Forum Paper.
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Chatman, Steve – 2000
This study used the restricted access database of the 1993 National Study of Postsecondary Faculty to examine faculty workload by academic discipline for full-time regularly appointed teaching and research faculty in public Carnegie research I and II and Doctoral I and II institutions (n=2,056). Data are reported for 14 disciplinary areas…
Descriptors: Academic Rank (Professional), Chi Square, College Faculty, Correlation
Equating Reading Tests With the Rasch Model. Volume II, Technical Reference Tables.
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Rentz, R. Robert; Bashaw, W. L. – 1975
This volume contains tables of item analysis results obtained by following procedures associated with the Rasch Model for those reading tests used in the Anchor Test Study. Appendix I gives the test names and their corresponding analysis code numbers. Section I (Basic Item Analyses) presents data for the item analysis of each test in a two part…
Descriptors: Comparative Analysis, Elementary Education, Equated Scores, Error of Measurement
Investigating Item Stability: An Empirical Investigation into the Variability of Item Statistics Under Conditions of Varying Sample Design and Sample Size. Occasional Paper No. 18.
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Farish, Stephen J. – 1984
The stability of Rasch test item difficulty parameters was investigated under varying conditions. Data were taken from a mathematics achievement test administered to over 2,000 Australian students. The experiments included: (1) relative stability of the Rasch, traditional, and z-item difficulty parameters using different sample sizes and designs;…
Descriptors: Achievement Tests, Difficulty Level, Estimation (Mathematics), Foreign Countries