1. 1 M04- Graphical Displays 2  Department of ISM, University of Alabama, 2003 Graphical Displays of Data

2. 2 M04- Graphical Displays 2  Department of ISM, University of Alabama, 2003 Lesson Objectives  Learn how to construct two graphs for a categorical variable.  Learn two additional graphs useful for two quantitative variables.  Learn a tabular method useful for seeing the relationship between two categorical variables.

3. 3 M04- Graphical Displays 2  Department of ISM, University of Alabama, 2003 Graphs  Histogram  Stem-and-leaf plot for a single quantitative variable  Bar Chart  Pie Chart for a single qualitative variable

4. 4 M04- Graphical Displays 2  Department of ISM, University of Alabama, 2003 Bar Chart Number of times each city appeared From an Excel Pivot Table

5. 5 M04- Graphical Displays 2  Department of ISM, University of Alabama, 2003 Bar Chart 1234 10 20 30 40 50 City Frequency Number of times each city appeared

6. 6 M04- Graphical Displays 2  Department of ISM, University of Alabama, 2003 Pie Chart 1 2 3 4 City

7. 7 M04- Graphical Displays 2  Department of ISM, University of Alabama, 2003 James Bartel runs a liquor store. How many bottles of champagne should he have in inventory each month? First step: Gather data Monthly records for number of bottles sold over last seven years.

8. 8 M04- Graphical Displays 2  Department of ISM, University of Alabama, 2003 1.5 3.0 4.5 6.0 7.5 9.0 10.5 12 13.5 15 30 20 10 40 Monthly Champagne Sales Freq. Bottles Sold ( in 100’s )

9. 9 M04- Graphical Displays 2  Department of ISM, University of Alabama, 2003 Recall what to look for in a data distribution:    

10. 10 M04- Graphical Displays 2  Department of ISM, University of Alabama, 2003 1.5 3.0 4.5 6.0 7.5 9.0 10.5 12 13.5 15 30 20 10 40 Monthly Champagne Sales Freq. Bottles Sold ( in 100’s )

11. 11 M04- Graphical Displays 2  Department of ISM, University of Alabama, 2003 Graphs  ________________ for a single quantitative variable observed over time

12. 12 M04- Graphical Displays 2  Department of ISM, University of Alabama, 2003 Sales 0 5 10 15 122436 48 607284 x100 Monthly Champagne Sales Month

13. 13 M04- Graphical Displays 2  Department of ISM, University of Alabama, 2003 Graphs ________________ for two quantitative variables

14. 14 M04- Graphical Displays 2  Department of ISM, University of Alabama, 2003

15. 15 M04- Graphical Displays 2  Department of ISM, University of Alabama, 2003 Graphs  Time series plot  Scatterplot  Two-way table for two qualitative variables

16. 16 M04- Graphical Displays 2  Department of ISM, University of Alabama, 2003 Two-Way Frequency Table Rows are levels of Columns are levels of Own? City 0 1 total 1 8 18.6 35 81.4 43 100 2 12 46.2 14 53.8 26 100 3 5 35.7 9 64.3 14 100 4 10 58.8 7 41.2 17 100 total 35 65 100 table contents: Count Percent of Column Total

17. 17 M04- Graphical Displays 2  Department of ISM, University of Alabama, 2003 3-D Bar Chart Own? 0 1 Location 1 2 3 4 Number of Families 0 5 10 15 20 25 30