if a model includes one lag, how much lag will it have if it is not included as endogenous variable? can an exogenous variable be included as an exogenous variable what is an endogenous var variable what variables are included in an autoregression what is the lag of endogenous variables in the vector autoregression model if the endogenous variable has one lag is also considered the endogenous variable what is a vector autoregression with exogenous variables? how can i estimate model parameters what is the difference between endogenous variable and exogenous variable in a model what variable in a vectra model does no exogenous variable include? which variable in a var is independent from the other variables when to include lags in a vector autocorrelation which variables would have lagged data for each var model? how many lags in vector autoregression how to calculate the lag for exogenous variables on a VAR how to estimate the lags for an exogenous variable in a vector autoregression model how many variables does the endogenous var model include how many variables are in each of the following models why does an autoregression model need more variables which variables are independent of endogenous variables