ABSTRACT

Otherwise known as an arithmetic mean, or average.

★★★★★ A mean appeared in 2⁄3 papers surveyed, so it is important to have an understanding of how it is calculated.

LLLLL One of the simplest statistical concepts to grasp. However, in most groups that we have taught there has been at least one person who admits not knowing how to calculate the mean, so we do not apologize for including it here.