MATH 124 Lecture Notes - Lecture 8: San Francisco State University, Bar Chart, Categorical Variable
Document Summary
Diagrams and graphs are used to visually summarize the data. These are organized presentations so that you can quickly get an overview of the data or focus on a specific result. In a world where fast information and juicy quotes are the norm, charts and graphs are commonplace. Most of them show the information in a clear, effective and unbiased way. The downside is that they leave some room for poetic license and, consequently, can expose you to a lot of misleading and incorrect data. Among the basic graphs used for categorical data are pie charts and bar graphs, which break down variables such as the sex of the person or mobile applications used by adolescents. A bar chart, for example, can show opinions on an issue by using five bars ordered from "strongly against" to. Chapter 6 provides a wealth of information on how to construct and interpret and, most importantly, evaluate these charts and graphs for fairness.
