This section explains the process and purpose of creating graphs and charts that present statistical information in a visual manner. Histograms, bar graphs, boxplots, pie charts, stem and leaf charts, frequency tables, and line charts will be examined. You will also learn and calculate important descriptive statistics such as the measures of central tendency and dispersion, quartiles, and how to identify the shape of distributions. At the end of this section, you should be able to present data visually through the use of charts, graphs and tables, as well as calculate and interpret the mean, median, mode, range, standard deviation, and quartiles for given data. You will also begin to utilize statistical software programs to perform important statistical procedures.

After completing the readings and assignments in this section you should be able to do the following:

**Learning Outcomes: 2, 3**

2. Construct and interpret graphs and tables to demonstrate analytical proficiency.

3. Calculate basic descriptive statistics and interpret their meaning in application.

**Introduction:**

**Graphs and Descriptive Statistics **

Upon completion of this week’s readings, you should have a solid understanding of the importance of presenting data visually. You will also begin to understand the value that descriptive statistics have in understanding the world at large.

Chapter Practice Questions

After you complete the textbook readings, check your understanding of the main concepts by reviewing the chapter review questions. Be sure to revisit appropriate sections of the textbook if you find that you need more review. While these questions are not a graded, they are important because they will help you monitor your learning as you progress through the course.