Restriction on Coeffi of 3 pooling equations
Posted: Fri Jul 30, 2010 5:59 pm
I have a pool set (10 years, 3 variables X Y Z, 20 cross-section). The model is like:
Y=a+b*X+u
Z=c+d*X+v
I have estimated the two equations seperatly by pooling, but the point is that I need to put a restriction like b+d=c, c is a constant, but I dont know how ..
can anyone help me.......
Many Thx!
Y=a+b*X+u
Z=c+d*X+v
I have estimated the two equations seperatly by pooling, but the point is that I need to put a restriction like b+d=c, c is a constant, but I dont know how ..
can anyone help me.......
Many Thx!