Choose the best answer to fill in the blank. The variance of an estimator measures__________________
i. how close the estimator is to the true value.
ii. how close repeated values of the estimator are to each other.
iii. how close the mean of the estimator is to the true value.
iv. how close repeated values of the mean of the estimator are to each other.
(ii) The variance measures the spread in repeated values of an estimator, that is, how close repeated values are to each other.
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