In the first-order autoregressive model Y_i = a₀ + a₁Y_i_-1+ _i,identify the nonautocorrelated random error term. A)a₀ B)_i C)a₁ D)Y_i_-1

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In the autoregressive model, the nonautocorrelated random error term is represented by the residual term, which is the difference between the observed value and the predicted value. In the given model, _i is the predicted value, and the only term that is not part of this prediction is the residual term _i - Y_i_-1, which is equivalent to B in the model. The other terms represent the relationship between the observed and predicted values and are not the residual term.

In the First-Order Autoregressive Model Yi = A0 + A1Yi-1

In the First-Order Autoregressive Model Y_i = A₀ + A₁Y_i_-1