Prof. Constantin ANGHELACHE PhD.
Bucharest University of Economic Studies
“Artifex” University of Bucharest
Prof. Janusz GRABARA PhD.
Czestochowa University of Technology
Assoc. prof. Alexandru MANOLE PhD.
“Artifex” University of Bucharest
Abstract
The ARMA models, provide in the statistical analysis of time series, a parsimonious description of a (weakly) stationary stochastic process in terms of two polynomials, one for the auto-regression and the second for the moving average. We want to estimate, by using the informatics soft Eviews, the future evolutions of the gross domestic product in Romania, for the period 2009 -2013, obtaining thus, on the ground of the official evolutions during the period 1991 – 2008, a model AR meant to grasp ex post the evolution of the economic growth from our country, for the period 2009 -2013. To achieve ex post the forecast for the evolution of the GDP, during the period 2009 -2013, we will use as “sample” the data published in the interval 1991 -2008.
Key words: dynamic, model ARMA, validity, prediction, autoregressive model, correlation, macroeconomic evolution
