________ Sampling Distribution- the distribution of all values taken by a statistic in all possible samples of the same size from the same population A statistic is called an unbiased estimator of a parameter if the mean of its sampling distribution is equal to the parameter being estimated Important Concepts for unbiased estimators The mean of a sampling distribution will always equal the mean of the population for any sample size The spread of a sampling distribution is affected by the sample size, not the population size.