Description: The article analyzes the reasons for reducing the reliability of the control. Noting that the major role played by methodological component of the error probabilities of control, which is to eliminate the presence of systematic errors transformation of information – impossible. It is shown that this component appears due to inadequate reproduction of stochastic parameters during training systems we control. It identifies three models of stochastic variables controlled. View the model indicates the character of random changes in the average value of a constant or variable dispersion. Pre-presented model transformation vector of controlled variables are stochastically dependent parameters control.
Keywords: heterogeneity, dynamic model, control, measurement