Question

If a statistic used to estimate a parameter is such that the mean of its sampling distribution is equal to the actual value of the parameter, what is the statistic said to be

-A proportion
-Random
-Biased
-Unbiased
-Varied

Answer 1

-Unbiased
============
Answer based on the following:

When the expected value of a statistic equals a population parameter, the statistic is called an unbiased estimator of that parameter.

http://www.psychstat.missouristate.edu/introbook/sbk19.htm