search for: dem_x_it

...esponse(plm(formula=inv~value,data=Grunfeld,index=c("firm","year"),model="within",effect="time")) dem_y_it<-pmodel.response(plm(formula=inv~value,data=Grunfeld,index=c("firm","year"),model="within",effect="twoways")) dem_X_it<-model.matrix(plm(formula=inv~value,data=Grunfeld,index=c("firm","year"),model="within",effect="twoways")) sum(y_i!=dem_y_i) #y_i[1:10] #dem_y_i[1:10] sum(y_t!=dem_y_t) #y_t[1:10] #dem_y_t[1:10] sum(y_it!=dem_y_it) #y_it[1:10] #dem_y_it[1:10] sum(x1_it!...