Which of the following statements is true of the sample mean?
A) It systematically overestimates the value of the population mean.
B) It systematically underestimates the value of the population mean.
C) It cannot be used to estimate the value of the population mean.
D) It is an unbiased estimate of the population mean.

Question

Quizplus · Accepted Answer

The sample mean is an unbiased estimate of the population mean, meaning that on average it will be equal to the true value of the population mean. This assumes that the sample is a random and representative subset of the population, without any systematic bias or error.

Which of the Following Statements Is True of the Sample