1. Guide to Using Minitab 14 For Basic Statistical Applications
To Accompany
Business Statistics: A Decision Making Approach, 8th Ed.
Chapter 2:
Graphs, Charts and Tables - Describing Your Data By
Groebner, Shannon, Fry, & Smith
Prentice-Hall Publishing Company
Copyright, 2011

2. Chapter 2 Minitab Examples
Frequency Distributions -
Athletic Shoe Survey
Histograms-
Capital Credit Union
Joint Frequency Distributions-
Joint Relative Frequencies-
More Examples

3. Chapter 2 Minitab Examples (continued)
Bar Charts-
Bach, Lombard & Wilson
Line Charts-
McGregor Vineyards
Scatter Diagrams-
Personal Computers

4. Frequency Distributions Athletic Shoe Survey
Issue: Analyze the data from a survey of 100 college students regarding the number of Nike shoes they own.
Objective: Use Minitab to develop a frequency distribution for the number of Nike shoes owned by college students.
Data File is SportShoes.MTW

5. Frequency Distributions-Athletic Shoe Survey
Open the Minitab file called Sportshoes.MTW
The file contains 100 observations. Column C5 contains the Number of Nike Shoes owned

6. Frequency Distributions-Athletic Shoe Survey
Select Stat then select Tables then Tally Individual Variables

7. Frequency Distributions-Athletic Shoe Survey
Select “Number of Nike” variable – Display Counts – OK

8. Frequency Distributions-Athletic Shoe Survey
Resulting Frequency Counts

9. Histograms Capital Credit Union
Issue: Analyze credit card balances for Capital Credit Union customers using a frequency distribution and histogram.
Objective: Use Minitab to develop a frequency distribution and histogram for credit card balances. Use ten class intervals.
Data file is Capital.MTW

10. Histograms-Capital Credit Union
Open the Minitab file called Capital.MTW
File contains 300 observations - Column C2 contains the balances

11. Histograms-Capital Credit Union
Select Graph and Histogram

12. Histograms-Capital Credit Union
Click Simple - OK

13. Histograms-Capital Credit Union
Select variable to be graphed - OK

14. Histograms-Capital Credit Union
Completed Histogram

15. Joint Frequency Distributions Capital Credit Union
Issue: Analyze the credit card balances by gender of the card holder.
Objective: Use Minitab to develop a joint frequency distribution for the credit card balances by gender.
Data File is Capital.MTW

16. Joint Frequency Distributions-Capital Credit Union
Open the Minitab file called Capital.MTW
File contains 300 observations - Column C2 contains the balances, Column C3 contains the gender code

17. Joint Frequency Distributions-Capital Credit Union
First, organize the Credit balances into groups (see Example 2-5)
Select Data – Code – Numeric to Text

18. Joint Frequency Distributions-Capital Credit Union
Minitab only codes 8 classes at a time. Code the first 8 classes; then code the remaining classes
Identify variable to be Recoded – indicate where to store new variable
Click OK

19. Joint Frequency Distributions-Capital Credit Union
To create the joint frequency table, use Stat – Tables – Cross Tabulation and Chi-square

20. Joint Frequency Distributions-Capital Credit Union
Define variables to be uses (Classes and Gender)
Click Column Percents - OK

21. Joint Frequency Distributions-Capital Credit Union
Completed Joint Frequency Distribution

22. Bar Charts Bach, Lombard, & Wilson
Issue: An electronics company is being sued on the grounds that female new hires are paid less than male new hires. The law firm needs to analyze salary data to prepare the case.
Objective: Use Minitab to develop bar charts for the starting salary data for males and females.
Data File is Bach.MTW

23. Bar Charts-Bach, Lombard & Wilson
Open the Minitab file called Bach.MTW

24. Bar Charts-Bach, Lombard & Wilson
Must Rearrange the data. Select Data - Stack - Columns

25. Bar Charts-Bach, Lombard & Wilson
Select Variables – Identify New Column Name – and Column for category labels - OK

26. Bar Charts-Bach, Lombard & Wilson
Stack the Year variable - OK

27. Bar Charts - Bach, Lombard & Wilson
Select Graph – Bar Chart

28. Bar Charts-Bach, Lombard & Wilson
Under Bars represent – Select Values from a table - OK

29. Bar Charts-Bach, Lombard & Wilson
Select Cluster – Click OK

30. Bar Charts-Bach, Lombard & Wilson
Define Variable to Graph and Categories - OK

31. Bar Charts-Bach, Lombard & Wilson
Finished Bar Chart 1= Males, 2 = Females

32. Line Charts- McGregor Vineyards
Issue: Analyze the sales and profits data over time.
Objective: Use Minitab to develop line charts for weekly sales and profits.
Data File is McGregor.MTW

33. Line Charts-McGregor Vineyards
Open the Minitab file called McGregor.MTW
File contains 20 weeks of historic data

34. Line Charts-McGregor Vineyards
Click on Graph
Select Time Series Plot.

35. Line Charts-McGregor Vineyards
Select Simple - OK

36. Line Charts-McGregor Vineyards
Define Variables to be Graphed – Select Multiple Graphs

37. Line Charts-McGregor Vineyards
Define Output Option – Click OK - OK

38. Line Charts-McGregor Vineyards
Finished Line Chart for the Sales and the Profit Variables.

39. Scatter Diagrams- Personal Computers
Issue: Analyze the relationship between PC sales price and the processing speed of the PC
Objective: Use Minitab to develop a scatter diagram for PC price and speed.
Data File is Computers.MTW

40. Scatter Diagrams- Personal Computers
Open the Minitab file called Computers.MTW
File contains data for 36 PC’s

41. Scatter Diagrams- Personal Computers
Click on the Graph, select Scatter plot

42. Scatter Diagrams- Personal Computers
Select Simple – Click OK

43. Scatter Diagrams- Personal Computers
Define the Y and X variables Click OK

44. Scatter Diagrams- Personal Computers
Completed Scatter Diagram