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Which Is Not an Assumed Characteristic of ε_i in the Population

Question 69

Multiple Choice

Which is not an assumed characteristic of ε_i in the population model y_i = β₀ + β₁ x_i + ε_i?

A) It is a random variable.
B) It has zero mean.
C) It is a statistic.
D) It is unobservable.

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