The efficiency of correlation-regression analysis would significantly expand if both of its essential variables - a dependent and an independent - conveyed the information on the dynamic rather than static state of a phenomenon under consideration. For this objective, the dynamic development of...

Freight transportation by rail is one of the most important factors in the country's economic development; and, therefore, a comprehensive analysis of the business development has both scientific and practical significance. The basis for the analysis and conclusion of this type is a possibility...