We say that a point estimator is unbiased if choose one A it

We say that a point estimator is unbiased if (choose one):

A its sampling distribution is centered exactly at the parameter it estimates.

B the standard deviation of its sampling distribution decreases as the sample size increases.

C its sampling distribution is normal.

D its value is always equal to the parameter it estimates.

E Choices (A), (B), and (C) are all true.

Solution

A.. its sampling distribution is centered exactly at the parameter it estimate