If U_t Refers to the Error Term at Time 'T

question 7

Multiple Choice

If u_t refers to the error term at time 't' and y_{t - 1} refers to the dependent variable at time 't - 1',for an AR(1) process to be homoskedastic,it is required that:

• A)Var(u_t|y_{t - 1})> Var(y_t|y_t-1)= σ².
• B)Var(u_t|y_{t - 1})= Var(y_t|y_t-1)> σ².
• C)Var(u_t|y_{t - 1})< Var(y_t|y_t-1)= σ².
• D)Var(u_t|y_{t - 1})= Var(y_t|y_t-1)= σ².

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