Statistics indicators specific chronological series to permit the establishment of the average efficiency of a portfolio of tools for a defined period of time and compare it with the return on other financial instruments or portfolios of securities. It also provides a number of valuable...

The structure of the industrial productions reveals that necessary goods for population’s consumption and economic activity have had a structure that passes through a process of stabilization, determined by the general situation of the economy, the needs of the economic environment, but also...

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...