1. Chapter 1 Graphs, Charts, and Tables – Describing Your Data
Business Statistics:
A Decision-Making Approach
6th Edition
Chapter 1 Graphs, Charts, and Tables – Describing Your Data
Business Statistics: A Decision-Making Approach, 6e © 2005 Prentice-Hall, Inc.

2. Chapter Goals After completing this chapter, you should be able to:
Present and interpret data in line charts and scatter diagrams
Business Statistics: A Decision-Making Approach, 6e © 2005 Prentice-Hall, Inc.

3. Line Charts and Scatter Diagrams
Line charts show values of one variable vs. time
Time is traditionally shown on the horizontal axis
Scatter Diagrams show points for bivariate data
one variable is measured on the vertical axis and the other variable is measured on the horizontal axis
Business Statistics: A Decision-Making Approach, 6e © 2005 Prentice-Hall, Inc.

4. Line Chart Example Year Inflation Rate 1985 3.56 1986 1.86 1987 3.65
1988
4.14
1989
4.82
1990
5.40
1991
4.21
1992
3.01
1993
2.99
1994
2.56
1995
2.83
1996
2.95
1997
2.29
1998
1.56
1999
2.21
2000
3.36
2001
2.85
2002
1.58
Business Statistics: A Decision-Making Approach, 6e © 2005 Prentice-Hall, Inc.

5. Scatter Diagram Example
Volume per day
Cost per day 23
125 26
140 29
146 33
160 38
167 42
170 50
188 55
195 60
200
Business Statistics: A Decision-Making Approach, 6e © 2005 Prentice-Hall, Inc.

6. Types of Relationships
Linear Relationships
Business Statistics: A Decision-Making Approach, 6e © 2005 Prentice-Hall, Inc.

7. Types of Relationships
(continued)
Curvilinear Relationships
Business Statistics: A Decision-Making Approach, 6e © 2005 Prentice-Hall, Inc.

8. Types of Relationships
(continued)
No Relationship
Business Statistics: A Decision-Making Approach, 6e © 2005 Prentice-Hall, Inc.

9. Business Statistics: A Decision-Making Approach, 6e © 2005 Prentice-Hall, Inc.

10. Seasonal Data … … Quarter Sales 1 2 3 4 5 6 7 8 9 10 11 etc… 23 40 2527 32 48 33 37 50 … …
Business Statistics: A Decision-Making Approach, 6e © 2005 Prentice-Hall, Inc.

11. Chapter Summary
Data in raw form are usually not easy to use for decision making -- Some type of organization is needed:
 Graph
A techniques reviewed in this chapter:
Line Charts and Scatter Diagrams
Business Statistics: A Decision-Making Approach, 6e © 2005 Prentice-Hall, Inc.