A statistic is an unbiased estimator of a parameter when a. the statistic is calculated from a
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A statistic is an unbiased estimator of a parameter when
a. the statistic is calculated from a random sample.
b. in a single sample, the value of the statistic is equal to the value of the parameter.
c. in many samples, the values of the statistic are very close to the value of the parameter.
d. in many samples, the values of the statistic are centered at the value of the parameter.
e. in many samples, the distribution of the statistic has a shape that is approximately Normal.
Select the best answer.
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