Results 211 to 220 of about 23,270 (258)

The Reliability of Linearly Equated Tests

Psychometrika, 1994
An asymptotic expression for the reliability of a linearly equated test is developed using normal theory. The reliability is expressed as the product of two terms, the reliability of the test before equating, and an adjustment term. This adjustment term is a function of the sample sizes used to estimate the linear equating transformation.
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WALD TESTS AND SYSTEMS OF STOCHASTIC EQUATIONS

International Economic Review, 1987
We have presented several results that enable the applications of Wald tests to systems of stochastic equations where the hypotheses of interest also relate to the parameters in the variance matrix. The chief advantages of our formulation are that the methods can be implemented rather easily since it is only necessary to optimize the usual concentrated
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Stability of Some Test Equations with Delay

SIAM Journal on Mathematical Analysis, 1994
The authors propose some techniques to obtain stability conditions for certain differential equations with delay. These techniques are applied to three concrete test situations. In the first and second cases, they consider equations without instantaneous dissipative terms.
KOLMANOVSKII V. B, TORELLI, LUCIO, VERMIGLIO R.   +2 more
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The Painleve test for the drift-wave equation

Plasma Physics and Controlled Fusion, 1991
When making a formal Laurent expansion for the solution of the one-dimensional drift-wave equation it is found that a compatibility condition is not satisfied. Thus the drift-wave equation does not pass the Painleve test.
He, K., Salat, A.
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A Bayesian Nonparametric Approach to Test Equating

Psychometrika, 2009
A Bayesian nonparametric model is introduced for score equating. It is applicable to all major equating designs, and has advantages over previous equating models. Unlike the previous models, the Bayesian model accounts for positive dependence between distributions of scores from two tests.
Karabatsos, George, Walker, Stephen G.
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On the Painlevé test for non-Abelian equations

Physics Letters A, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Balandin, S. P., Sokolov, V. V.
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Equating and equivalence of tests

1995
A test form serves its purpose of assessing an individual’s skill, ability, or knowledge of a well-defined domain only if the test scores satisfy a number of conditions. First, the test scores have to be strongly associated (highly correlated) with the measured trait. This trait is an inherently unobservable quantity.
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Test Equating.

Applied Statistics, 1983
P. H. Jackson, P. W. Holland, D. R. Rubin   +2 more
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Test Equating: What, Why, How?

Research Quarterly for Exercise and Sport, 1998
The purpose of this paper is to introduce test equating, including its concept, needs, and methods, to the field of physical education and exercise science. Both traditional and item response theory (IRT) equating methods, along with data collection designs, were described in detail, and the advantages and disadvantages of these methods were also ...
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A Fresh Test of the Epstein Equations for Cylinders

Journal of Applied Mechanics, 1958
Abstract Objections that have been raised against Epstein’s equations of motion for uniform cylindrical shells and the author’s extensions and conclusions from them are considered. A direct proof is offered that the equations must hold, and further reasons are given for believing that they can be used in practice, at least as a basis for
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