Hello guys,
I am using gravity model to estimate trade effects along China Mongolia Russia economic corridor of Belt and Road Initiative. However i am having some problems getting my regression results in Stata. i think it is because of my dataset i compiled. I have compiled data from 2016- 2018(because it was initiated in 2016) to check the effect of Belt and Road. When i run the regression i get the message "insufficient number of observations". Also my variables are being omitted because of collinearity. I have attached my data set in xlsx.
these are my the explanations of my variables:
GDPpc(mon)= GDP per capita Mongolia
GDPpc(cr)= GDP per capita China and Russia
GDP(mon/cr)= GDP per capita Mongolia/GDP per capita China and Russia
POP= population
dist=distance
ER(MNT/cr)= exchange rate MNT/CNY and RUB
trade
Port Infrastructures
Air transport Infrastructures
Railroad infrastructures
POPLN= log10 of population
distLn= log10 of distance
tradeLN= log10 of trade (dependent variable)
ERLn= log10 of exchange rate ratio
PortLn=log10 of port infrastructure
AirLn= log10 of air infrastructure
RailLn= log10 of rail infrastructure
border=dummy variable of border
language=dummy variable of language
SP= dummy variable of strategic partnership
Can someone please give me advice on my dataset? I would really appreciate the help.
Thank you in advance
I am using gravity model to estimate trade effects along China Mongolia Russia economic corridor of Belt and Road Initiative. However i am having some problems getting my regression results in Stata. i think it is because of my dataset i compiled. I have compiled data from 2016- 2018(because it was initiated in 2016) to check the effect of Belt and Road. When i run the regression i get the message "insufficient number of observations". Also my variables are being omitted because of collinearity. I have attached my data set in xlsx.
these are my the explanations of my variables:
GDPpc(mon)= GDP per capita Mongolia
GDPpc(cr)= GDP per capita China and Russia
GDP(mon/cr)= GDP per capita Mongolia/GDP per capita China and Russia
POP= population
dist=distance
ER(MNT/cr)= exchange rate MNT/CNY and RUB
trade
Port Infrastructures
Air transport Infrastructures
Railroad infrastructures
POPLN= log10 of population
distLn= log10 of distance
tradeLN= log10 of trade (dependent variable)
ERLn= log10 of exchange rate ratio
PortLn=log10 of port infrastructure
AirLn= log10 of air infrastructure
RailLn= log10 of rail infrastructure
border=dummy variable of border
language=dummy variable of language
SP= dummy variable of strategic partnership
Can someone please give me advice on my dataset? I would really appreciate the help.
Thank you in advance
