If a series, yt, follows a random walk (with no drift), what is the optimal 1-step ahead forecast for y?
A. The current value of y
B. Zero
C. The historical unweighted average of y
D. An exponentially weighted average of previous values of y
Giải bởi Vietjack
Chọn đáp án: A
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If a series, yt, follows a random walk (with no drift), what is the optimal 1-step ahead forecast for y?
If a series, yt, follows a random walk (with no drift), what is the optimal 1-step ahead forecast for y?
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