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Hi, I am encountered a problem regarding testing significance of estimated coefficients. I have estimated the following two equations independently using Eviews: Y1=a0 + a1*X1 + a2*Y2 + e Y2 = b0 + b1*X2 + b2*Z1 + I e and i are respective residuals. I hypothesize that Z1 affects Y2 and Y2 affects Y1...

greetings... I am estimating an equation with time series data that consists of 41 annual observations and applying GMM. The Model is: imports share = f(GDP, average tariff rates, Liberalization dummy, RER, TOT etc) Some of the variavles are nonstationary. Should i make them stationary before applyi...