Question: An A R ( 1 ) model with the coefficient 1 = 1 , and the constant c 0 , is equivalent to: a .

An AR(1) model with the coefficient 1=1, and the constant c0, is equivalent to:
a. White noise
b. Random walk
c. Random walk with a drift
d. Oscillating model between positive and negative values
An A R ( 1 ) model with the coefficient 1 = 1 ,

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