# Chapter 5: Central Tendency

Difficulty Level:

**At Grade**Created by: CK-12

In this chapter, you will learn to understand, calculate, and evaluate various measures of central tendency. Central tendencies are measures of a typical or average central value in a set. Later in the chapter, we will also discuss variability, which is the degree to which data varies from the central value.

## Chapter Outline

- 5.1. Arithmetic Mean
- 5.2. Geometric Mean
- 5.3. Harmonic Mean
- 5.4. Median - Probability and Statistics
- 5.5. Mode - Probability and Statistics
- 5.6. Calculating Variance
- 5.7. Variance Practice
- 5.8. Calculating Standard Deviation
- 5.9. Coefficient of Variation

### Chapter Summary

Various real-world uses of probability and statistics were discussed and explored. Students were given examples of multiple ways in which an understanding of probability and statistics could contribute to their own lives and activities.

### Image Attributions

## Description

A detailed, and somewhat advanced, study of measures of central tendency and variability. Beginning with arithmetic, geometric and harmonic means, lessons then progress through median and mode before moving on to variability measures. Each new measure is illustrated with applications and sample theoretical uses before the next is introduced. Studies of variability include calculating and applying variance and standard deviation, and finding and applying the coefficient of variation.

## Difficulty Level:

At Grade## Date Created:

Apr 03, 2013## Last Modified:

Jan 26, 2015
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