which of the following is an example of a spar model? is the var model exogenous what is the coefficient for var vars estimator what is the coefficient of var model how is the var model computed var model definition how to estimate the value of an exogenous variable in a var how to estimate var model how to calculate var how to estimate var model which variable is always the var model? how to estimate the var model which variable is a strictly exogenous variable how does var model work when you calculate the coefficient for i var what is the var equation used for? how to calculate variance models how to estimate var model what is the var model