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Thissen, David; Wainer, Howard – 1984
Simulation studies of the performance of (potentially) robust statistical estimation produce large quantities of numbers in the form of performance indices of the various estimators under various conditions. This report presents a multivariate graphical display used to aid in the digestion of the plentiful results in a current study of Item…
Descriptors: Computer Software, Data Interpretation, Estimation (Mathematics), Graphs
Thissen, David; And Others – 1984
This report documents a computer program for simulation evaluation of item response theory (IRT) ability estimators. This Honeywell DPS version is a very slight modification of the program originally developed in FORTRAN-77 on a DEC VAX 11/780. The model of the world simulated by the program involves a unidimensional test in which the probability…
Descriptors: Academic Ability, Computer Simulation, Computer Software, Estimation (Mathematics)
