is recognized as an emerging disease only in the early 1980s, AIDS has rapidly established itself throughout the world …, and is likely to endure and persist well into the 21s century. AIDS has evolved from a mysterious illness to a global …

. This evidence was confirmed by all four models. OLS proved as a better technique for our data than 2SLS, this simply … because overidentification test showed that instrument cannot be considered exogenous, also Hausman test showed that OLS is … results from the OLS and 2SLS. As a proxy variable for institutions we used Rule of law variable, also as instruments were …

In this paper the issue of causality between wages and prices in UK has been tested. OLS relationship between prices …

employed Ordinary Least Square (OLS) estimation of gravity model using panel data consisting of 27 countries of destinations …

covariance matrix of OLS in a standard linear regression model. These formulae provide substantial insight into the properties …