Which of the Following Statements Concerning the Box Plot and Z-Score

Multiple Choice

Which of the following statements concerning the box plot and z-score methods for detecting outliers is false?

A) The z-score method uses the mean and standard deviation as a basis for detecting outliers.
B) The box plot method uses the quartiles as a basis for detecting outliers.
C) The z-score method is less affected by an extreme observation in the data set.
D) The box plot method is less affected by an extreme observation in the data set.