Chapter 2. Presenting Data in Tables and Charts

2.1 Presenting Categorical Variables

2.2 Presenting Numerical Variables

2.3 “Bad” Charts

One-Minute Summary

Test Yourself

Tables and charts are ways of summarizing categorical and numerical variables that can help you present information effectively. In this chapter, you will learn the appropriate types of tables and charts to use for each type of variable.

2.1 Presenting Categorical Variables

You present a categorical variable by first sorting values according to the categories of the variable. Then you place the count, amount, or percentage (part of the whole) of each category into a summary table or into one of several types of charts.

The Summary Table

CONCEPT A two-column table in which ...

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