extended · article · 2017

INVESTIGATION OF MEASUREMENT PRECISION OF LATENT VARIABLE DEPENDING ON THE RANGE OF VARIATION OF INDICATORS SET

Anatoly Maslak; С. И. Моисеев; Sergey A. Osipov; Stanislav Pozdnyakov; Trevor G. Bond

Context. An important practical aspect of measurement of a latent variable is precision because the efficacy of accepted decisions dependson it. One of possible ways of increasing precision of measurement of latent variables is the choice of best location of a set of indicators.Objective. The objective is the investigation of precision of measurement of a latent variable depending on location of a set of indicators. In order to achieve this goal it is necessary to generate matrices of data based on Rasch model, to obtain estimations of latent variable, and to compare the obtained estimations of a latent variable to those values which were used for modelling.Method. Taking into account that the model of measurement of latent variable is nonlinear, the analytical decision is complicated.Therefore, research was conducted through the simulation experiment within the framework of the theory o...