Chapter 2: Descriptive Statistics
Overview
This chapter introduces how to describe the center and spread (variation) of a distribution using descriptive measures. The measures for the center covered in this chapter are median, mean, and mode. The measures for the variation are range, interquartile range, and standard deviation.
As a result of completing this chapter, you will be able to do the following:
- Choose proper measures to describe the center and spread (variation) of a distribution.
- Calculate the mean, median, mode, standard deviation, range, and interquartile range of the given data, if applicable.
- Calculate the quartiles and five-number summary of the data.
- Draw a boxplot for the given data.
- Explain the meaning of a z-score.
