ISyE 2028A, Summer 2010 Friday June 4 Quiz 3 (Pre) Solutions 1.A point estimator ˆθis said to be a(n) __________ estimator of ˆif ˆ()Eθθ=for every possible value of . [1 point]ANSWER:unbiased 2.Among all estimators of parameter that are unbiased, choose the one that has minimum variance. The resulting ˆis called the __________ of . [1 point]ANSWER: minimum variance unbiased estimator (MVUE) 3.In your text, two important methods were discussed for obtaining point estimates: the method of __________ and the method of __________. [2 points]ANSWER: moments, maximum likelihood 4.Which of the following statements are true if 12,, ,nXXXis a random sample from a distribution with mean 2and variance µσ? [1 point]A.222() /(2) is an unbiased estimator of SXX nσ=−+∑B.2() /(1) is an unbiased estimator of
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