An unbiased estimator of a population parameter is defined as:
a. an estimator whose expected value is equal to the parameter.
b. an estimator whose variance is equal to one.
c. an estimator whose expected value is equal to zero.
d. an estimator whose variance goes to zero as the sample size goes to infinity.
Question 2
We check for normality by drawing a pie chart of the residuals.
Indicate whether the statement is true or false