Question 14 1 pts Let {X1, . .., Xn } be a sample iid N(u, or). The coefficient of variation is the ratio of the standard deviation to the mean CV = ". An estimator for the coefficient of variation is CV = 2. where X = 1 2" X, and S = 1. ) (X, - X). Select all correct answers. O CV is unbiased. O CV is consistent. Q CV is neither unbiased or consistent