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?²Y_t
A)= ?Y_t - ?Y_t_-₁ $Y _ { t } ^ { 2 }$

Question 4

Question 4

Multiple Choice

?²Y_t

A) = ?Y_t - ?Y_t_-₁.
B) = $Y _ { t } ^ { 2 }$ - $Y _ { t - 1 } ^ { 2 }$
C) = ?Y_t-?Y_t_-₂.
D) = Y_t- Y_t_-₂.

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