In a popular paper published in 1992 by the Quarterly Journal of Economics (QJE), Gregory Mankiw, David Romer and David Weil (MRW) conclude that:
"international differences in income per capita are best understood using an [economic] growth model [where] output is produced from physical capital, human capital, and labor, and is used for investment in physical capital, investment in human capital, and consumption."
(Mankiw et al. 1992 , p. 432)
Using the Eviews/GRETL dataset attached, carefully explain the empirical evidence MRW provide in support in of their thesis. In the light of this econometric analysis, do you share the authors' conclusion above?