What is the difference between an estimator and an estimate? A. An estimate is a function of a sample of data to be drawn randomly from a population whereas an estimator is the numerical value of the estimator when it is actually computed using data from a specific sample. B. An estimator is a function of a sample of data to be drawn randomly from a population whereas an estimate is the numerical value of the estimator when it is actually computed using data from a specific sample. C. Both an estimator and an estimate are functions of a sample of data to be drawn randomly from a population. D. Both an estimator and an estimate are numerical values computed using data from a specific sample. Determine whether the following are examples of estimators, estimates or neither. A. The sample variance is 6.3 . B. The sample variance is X. C. The variance of random variable Z in a population. D. The sample average is 68.4 . E. The sample average is X. neither estimate estimator