how does an estimator of the average of a distribution have the variance? can a unbiased estimator of a mean have a variance can an estimator of the mean of a distribution have a variance does an unbiased estimator have a variance can an estimator of mean of a distribution without variance have an unbiased variable? how do unbiased estimators work can an estimator of a distribution with no variance have a variable? unbiased estimate of variance variance does unbiased analysis have a variance? can an estimator of mean of a distribution with no variance be unbiased does an estimator of the mean have a variance is a pareto unbiased does an unbiased estimator of the variance have a defined variance? what is the variance in a Pareto can an estimator of the variance have a defined variance? is variance in a distribution unbiased how are variances determined how does a variance estimator work can an estimator of the mean of a distribution with no variance have a variance? when does variance of a sample include mean or variance