13．If no other estimator of a given parameter has a sampling distribution with a smaller variance, the estimator used is best characterized as:
Select exactly 1 answers from the following:
A. accurate. B. efficient. C. unbiased. D. consistent.
答案和详解如下！
Feedback: Correct answer: B
Quantitative Methods for Investment Analysis, Richard A. DeFusco, Dennis W. McLeavey, Jerald E. Pinto, and David E. Runkle (CFA Institute, 2004), pp. 295?97 2006 Modular Level I, Vol. I, pp. 451-453 Study Session 3-11-g identify and describe the desirable properties of an estimator
An unbiased estimator is efficient if no other unbiased estimator of the same parameter has a sampling distribution with smaller variance.
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发表于 2006-11-22 10:54
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