Geometric Mean

Here you will learn how to calculate the geometric mean of a set of data, and will review some appropriate uses of the geometric mean.Suppose you were assigned to help evaluate the scoring from surveys given to students to choose the prom king at your high school prom. The survey asked the students to score the nominees on a five-point scale for each of four categories, on a twenty-five point scale for each of three categories, and on a thirty-five point scale for the last 4 categories.

Grades 6 through 7 Material from CK-12

Preview Assign

Why Use This Content?

Read Receipt

See when students have begun their work. Or not.




Recognize that a measure of center for a numerical data set summarizes all of its values with a single number, while a measure of variation describes how its values vary with a single number.




Use measures of center and measures of variability for numerical data from random samples to draw informal comparative inferences about two populations.



Informally assess the degree of visual overlap of two numerical data distributions with similar variabilities, measuring the difference between the centers by expressing it as a multiple of a measure of variability.