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A New Computational Method to Fit the Weighted Euclidean Distance Model.
Peer reviewed Peer reviewed
De Leeuw, Jan; Pruzansky, Sandra – Psychometrika, 1978
A computational method for weighted euclidean distance scaling (a method of multidimensional scaling) which combines aspects of an "analytic" solution with an approach using loss functions is presented. (Author/JKS)
Descriptors: Computer Programs, Mathematical Formulas, Mathematical Models, Multidimensional Scaling
Statistical Inference for Two Reliability Indices in Mastery Testing Based on the Beta-Binomial Model.
Peer reviewed Peer reviewed
Huynh, Huynh – Journal of Educational Statistics, 1979
In mastery testing, the raw agreement index and the kappa index may be estimated via one test administration when the test scores follow beta-binomial distributions. This paper reports formulae, tables, and a computer program which facilitate the computation of the standard errors of the estimates. (Author/CTM)
Descriptors: Computer Programs, Cutting Scores, Decision Making, Mastery Tests
Approximation of Area under a Curve.
Peer reviewed Peer reviewed
Sconyers, James M. – Mathematics Teacher, 1984
The density and Monte Carlo methods for approximating the area under a curve, without relying on calculus, are given. A computer program is included. (MNS)
Descriptors: Area, Computer Programs, Geometric Concepts, Mathematical Formulas
The Calculation of Potential Energy Curves of Diatomic Molecules: The RKR Method.
Peer reviewed Peer reviewed
Castano, F.; And Others – Journal of Chemical Education, 1983
The RKR method for determining accurate potential energy curves is described. Advantages of using the method (compared to Morse procedure) and a TRS-80 computer program which calculates the classical turning points by an RKR method are also described. The computer program is available from the author upon request. (Author/JN)
Descriptors: Chemistry, College Science, Computer Programs, Energy
A Monte Carlo Evaluation of Estimated Parameters of Five Shrinkage Estimate Formuli.
Peer reviewed Peer reviewed
Newman, Isadore; And Others – Multiple Linear Regression Viewpoints, 1979
A Monte Carlo simulation was employed to determine the accuracy with which the shrinkage in R squared can be estimated by five different shrinkage formulas. The study dealt with the use of shrinkage formulas for various sample sizes, different R squared values, and different degrees of multicollinearity. (Author/JKS)
Descriptors: Computer Programs, Correlation, Goodness of Fit, Mathematical Formulas
TK!Solver from Software Arts.
Ahl, David H. – Creative Computing Software Buyer's Guide, 1983
"TK!Solver" was designed as a personal computing tool to solve problems involving mathematical calculations and analysis. An in-depth review of this model building and problem-solving package is provided. System commands, applications (including data lists, plots/graphs, iterative problem-solving, present values), and other areas are…
Descriptors: Architecture, Business, Computer Programs, Engineering
Statistical and Microscopic Approach to Gas Phase Chemical Kinetics.
Peer reviewed Peer reviewed
Perez, J. M.; Quereda, R. – Journal of Chemical Education, 1983
Describes advanced undergraduate laboratory exercise examining the dependence of the rate constants and the instantaneous concentrations with the nature and energy content in a gas-phase complex reaction. Computer program (with instructions and computation flow charts) used with the exercise is available from the author. (Author/JN)
Descriptors: Chemical Reactions, Chemistry, College Science, Computer Programs
Where Do These Numbers Come From?
Peer reviewed Peer reviewed
Stover, Donald W. – Mathematics Teacher, 1980
Some insights are provided into techniques for removing the mystery of how calculators evaluate functions. (Author/MK)
Descriptors: Algorithms, Calculators, Computation, Computer Oriented Programs