# Ch 4: Data & Statistics

Let the following online tutorial help you learn about bar graphs, pie charts and two-way tables. You can also use the video lessons and quizzes to study the calculations of mean, median, mode and range.

## Data and Statistics - Chapter Summary

Bar graphs and pie charts, or circle graphs, provide comparisons of data. Begin this chapter by learning the various parts of these graphs, their most common uses and how to read them. You can work your way through the examples and practice problems for more experience with both types of graphs. Two-way tables, or contingency tables, can be used to express survey question results. You'll be able to see examples of contingency tables and learn how to create and read these types of statistical tables.

You can also find out how to calculate mean, median, mode and range. Learn what types of information these measures provide and look at examples of each. Upon completion of this chapter, you should understand the following topics:

• Bar graphs and pie charts
• Group data axis and range of values
• Intervals, sectors and graph titles
• Categorical data
• Frequency
• Measures of central tendency
• Data points and bimodality

These lessons contain many examples that provide crucial support for your learning. Watch the short, engaging videos as many times as you want, or use the tags to go back and review any specific sections. You can take the quick, interactive quizzes at the end of each lesson to gauge your understanding of the subject matter. The lessons are also readily available in printed text, to be used as a supplement or in place of the videos. In addition, many key terms have links to separate text lessons that offer additional clarification.

13 Lessons in Chapter 4: Data & Statistics
Test your knowledge with a 30-question chapter practice test
Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

### Earning College Credit

Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.