Which of the following statements is true?
A)The sample mean is relatively more efficient than the sample median.
B)The version of the sample variance where you divide by n is biased.
C)The sample mean is consistent.
D)All of these choices are true.

Question

Quizplus · Accepted Answer

All the statements provided are true. The sample mean is more efficient than the sample median under normal distribution due to lower variance. The version of the sample variance where you divide by n (instead of n-1) is biased because it tends to underestimate the population variance. The sample mean is consistent, meaning it converges in probability to the true population mean as the sample size increases.

Which of the Following Statements Is True