The tests used for verifying certain hypotheses formulated on the parameters of the regression model as well as for defining the intervals of confidence for these ones and elaborating predictions have as starting point the verification of the hypothesis concerning the normal distribution of the...

This paper presents the evolution of the consumer prices, which in turn is a measure if the inflation. By using official statistical data, the authors synthesize the main characteristics of the price indicators. The research emphasizes the the divergent evolution between the consumer price...

Before beingutilized, any model based on the regression function must be analysed and accommodated to the actual conditions implied by the performed analysis. The veracity of the outcomes resulting out of the utilization of the regression model implies that the significance of the model being...

This paper describes some of the most important aspects that characterize the foreign trade of Romania until June 2013. One of the most important conclusions drawn is the fact that significant decreases in volume and value of both import and export were recorded. One key factor identified in the...

This method is to be found out in the economic theory as beta method. This method is largely utilized for studying the risk of equities. In the frame of this method, the risk is identified through the fluctuation of their yield. Thus, the higher the fluctuation degree of the portfolio yield is,...