ABSTRACT
Whether we speak of harmonic mean, geometric mean, or arithmetic mean, each is designed to find the “center” or “middle” of a set of numbers. These terms capture the intuitive notion of a “central tendency” that may be present in the data. In statistical analysis, an “average of data” is a number that indicates the middle of the distribution of data values. The three most important measures of the center used in statistics are the mean, median, and mode. In this chapter, we discuss the first two.
