The complex datasets cannot be analyzed using only simple regressions. Multilevel models (also known as hierarchical linear models, nested models, mixed models, random coefficient, random-effects models, random parameter models or split-plot designs) are statistical models of parameters that...

An outlier is an observation that appears to deviate evidently from other observations in the sample. It is important to identify an outlier because it may suggest erroneous data or, in some cases, outliers may be due to random variation or may indicate something scientifically interesting....

In the paper we estimate an econometric model to analyse the relationship between greenhouse gases emissions from agriculture, the share of organic farming area in total utilized agricultural area and the dynamics of gross value added from agriculture as a share of GDP. The data used in...

If the firm holds a certain market power (Lerner index is positive), then the company's market presence generates a welfare loss. On the one hand, this loss is due to the contraction in demand as a result of practicing a higher price than the competitive price because the higher price...

In a recent paper, Professor Dobrescu (2011) analyses the relationship between sectoral structure and economic growth, using data on the world economy for the period 1970-2008. In this paper, we try to extend this relationship at regional level. Concretely, using the Toda-Yamamoto version of the...

In this paper we analyse the link between politics and economics in Romania under the socialist regime and during the first years of democracy. To investigate this relationship, we focus on how the electoral moments (election's dates for Great National Assembly) or political events (years of...

Romania has experienced a new electoral model, a model in which a gap between general elections and the Presidential election was introduced. Also in 2008 the election law was changed. The current design provides a uninominal voting system with a correction of the total number of seats by the...

In Romania, the 2008 local elections were held based on a new electoral law. The main changes concerned the election of chairpersons of county councils by uninominal voting, shifting of the general and presidential elections and the introduction of a uninominal voting system for parliamentary...

In Romania, the 2008 local elections were held based on a new electoral law. The main changes concerned the election of chairpersons of county councils by uninominal voting, shifting of the general and presidential elections and the introduction of a uninominal voting system for parliamentary...