In the authors meaning, this work submits the merits of utilizing the chain based system for building up the price indices within the time series comparatively with the utilization of the fix base system. Meantime, the authors are emphasizing the different properties, axioms or tests, which...

The evaluation of profitability and risk for a commercial company occupies a central place in the financial analyses performed by third-party financial institutions or by various stakeholders. The management of the company is responsible for profitability and risks, so it can be considered as...

Starting from the non-linear single factorial models, authors approach the linear regression model topic, by explicating the parameter estimation methodology, test of properties for the estimators of the regression model and the conditions for the use of regression in forecasting. The...