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Guide to Using Minitab 14 For Basic Statistical Applications To Accompany Business Statistics: A Decision Making Approach, 8th Ed. Chapter 2: Graphs, Charts.

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Presentation on theme: "Guide to Using Minitab 14 For Basic Statistical Applications To Accompany Business Statistics: A Decision Making Approach, 8th Ed. Chapter 2: Graphs, Charts."— Presentation transcript:

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 - Frequency Distributions - Frequency Distributions - Frequency Distributions - Athletic Shoe Survey Histograms- Histograms- Histograms- Capital Credit Union Joint Frequency Distributions- Joint Frequency Distributions- Joint Frequency Distributions- Joint Frequency Distributions- Capital Credit Union Joint Relative Frequencies- Joint Relative Frequencies-Joint Relative Frequencies-Joint Relative Frequencies- Capital Credit Union 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 Select Graph and Histogram Histograms-Capital Credit Union

12 Click Simple - OK Histograms-Capital Credit Union

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

14 Completed Histogram Histograms-Capital Credit Union

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

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

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

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

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

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

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

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

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

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

35 Select Simple - OK Line Charts-McGregor Vineyards

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

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

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

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 PCs

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

42 Select Simple – Click OK Scatter Diagrams- Personal Computers

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

44 Completed Scatter Diagram Scatter Diagrams- Personal Computers


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