Under the hypotheses IA and IB, OLS estimators are both linear and stationary. For it to provide the same minimum variance of all linear and stationary estimators and to take part of BLUE, it is necessary that the classical assumptions IIB and IIC should be available. As in the case of...

The analysis of the correlations between the economic variables can be performed depending on non-linear functions also, which are linearized by transformations. We proceed likewise in order to submit the non-linear model in a simple equivalent form, allowing an easy interpretation of the...

The estimation of the regression function, can analyze a transformation of this function. The option for this transformation is grounded by the economic analysis which defines the parameters of interest. A procedure of adjustment is included, consisting of the elimination of the data placed at...

This paper includes an analysis of the consumption prices, as they represent a major instrument for the measurement of inflation. The analysis methodology takes into account a series of criteria that are presented and described in the first part of the paper. The results of the analysis are...

In this paper, the authors present some considerations regarding the use of the multifactorial regression model in the statistical analysis of economical phenomenon. The paper comprises the steps necessary t determine the parameters of the model, the testing of model and the interpretation of...

The increasing demand of relevant, viable, coherent data users, in useful time, to early detec economic vulnerabilities and turnpoints in business cycles, especially during the economical and financial crisis, demands a prompt, coordinated response by statistical institutions. High quality short...

A key element in economic stability analysis is the consumer price developments in the national economy. In 2000, it had a very high rate and objective successive governments during that period was represented by undertaking measures to ensure stability and evolution influenced by economic...

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...