3. A researcher was interested in explaining differences in average GDP per capita across countries and obtains the following two (partial) regression results. The dependent variable in both is the log of average GDP per capita. Standard Standard Coefficient. Error Coefficient Error Constant 6.3251 0.4598 3.8201 2.1565 Temperature -0.0914 0.0100 0.0171 0.0171 Inverse distance to 4.4768 0.5266 1.6460 0.7154 Coast Log(oil production per 1.2192 0.1985 0.6642 0.2352 capita) Years of education 0.1522 0.0364 Log(population) 0.0909 0. 1051 Institutional Quality 0.1227 0.2804 Expropriation Risk 0.2399 0.1064 Trust in Others 1. 0995 0.7480 Log(number of ethnic 0.1180 0.1378 groups) Observations 107 35 Adjusted R-sq 0.50 0.79 What do these two regressions tell us about differences in average GDP? 50 marks]