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Objectives By the end of this section, I will be able to . . .
| 1 | Construct and interpret a frequency distribution and a relative frequency |
|---|---|
| distribution for qualitative data. | |
| 2 | Build and interpret bar graphs and Pareto charts. |
| 3 | Construct and interpret pie charts. |
| 4 | Build crosstabulations to describe the relationship between two variables. |
| 5 | Work with tabular data to construct graphs and distributions. |
| 6 | Construct a clustered bar graph to describe the relationship between two variables. |
In Chapter 2, we apply the adage “A picture is worth a thousand words.” The human mind can assess information presented in a graph or table better than it can through words and numbers alone. Psychologists sometimes call this innate ability pattern recognition. Statistical graphs and tables take advantage of this ability to quickly summarize data.