期刊名称：Annals of the University of Oradea : Economic Science
印刷版ISSN：1222-569X
电子版ISSN：1582-5450
出版年度：2007
卷号：XVI
期号：02
页码：912-915
出版社：University of Oradea
摘要：Compared to time-series or cross-section analyses, panel data allow us to control for individual specific
characteristics - possibly unobservable - which may be correlated with certain explanatory variables in the
specification of an economic relationship. Not controlling for unobservables leads to obtaining biased results.
After controlling for such unobservable characteristics, we calculate efficient estimates of a trade flux equation
between heterogeneous economies.
关键词：individual heterogeneity, fixed effects, random effects, POLS estimators
