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Creating Pie & Bar Charts with Minitab: Analysis of Three Stooges' Directors - Prof. Rober, Assignments of Statistics

East Tennessee State University (ETSU)Statistics
Prof. Robert B. Gardner

Step-by-step instructions on how to use minitab to create a pie chart and a bar chart based on data about the directors of the three stooges' films. Students will learn how to enter data into minitab, create charts, and interpret the results. The document also includes questions to help students understand the concepts.

Typology: Assignments

Pre 2010

Uploaded on 08/19/2009

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koofers-user-vt2 🇺🇸

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Pie Charts and Bar Charts on
Directors of Three Stooges Films
Probability and Statistics (MATH 1530)
Worksheet, Gardner and Davidson, Spring 2009
The purpose of this worksheet is to help familiarize you with Minitab. You are given
step-by-step instructions on exactly what commands to give Minitab in order to produce a
pie chart and a bar chart based on data concerning the directors of the films of the Three
Stooges. Answer all questions (which appear in red) in complete sentences – you are
trying to convince me that you understand the material and that you can communicate
your understanding clearly.
The Three Stooges had a number of different directors In the 190 films that they made
with Columbia Pictures between 1934 and 1959. Here is a table of data which includes
several of the directors, along with the number of films they directed:
Director # of Films Directed
Del Lord 39
Preston Black 7
Charles Chase 5
Jules White 104
Edward Bernds 25
Other 10
You will create a pie chart and a bar graph which reflects the information in this table.
You will then be asked a few questions about the results.
Start Minitab by clicking on the start button at the lower left of the screen. From All
Programs, choose Statistical Programs and find Minitab in the list. Once Minitab
starts, you will see a mostly clear white window at the top labeled Session and a lower
window labeled Worksheet 1. You will enter the data in the worksheet window.
Here are the steps to enter the data. In column 1 (C1) enter the directors’ names in the
cells (order does not matter). You can use the edit keys (the four keys with the arrows on
them) to move between cells. The name of the column will change to C1-T since you
have entered text in that column. Then enter the number of films directed by each person
in column 2 (C2) in the corresponding position. You now have the data (both categorical
and quantitative).
Here are the commands to create the pie chart. Click on the Graph tab and select Pie
Chart from the pull down menu. Select “Chart values from a table.” Click in the
“Categorical variable” box, click on C1 in the left hand box and then click on the
Select button. Click in the “Summary variables” box, click on C2 in the left hand box
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Download Creating Pie & Bar Charts with Minitab: Analysis of Three Stooges' Directors - Prof. Rober and more Assignments Statistics in PDF only on Docsity!

Pie Charts and Bar Charts on

Directors of Three Stooges Films

Probability and Statistics (MATH 1530)

Worksheet, Gardner and Davidson, Spring 2009

The purpose of this worksheet is to help familiarize you with Minitab. You are given step-by-step instructions on exactly what commands to give Minitab in order to produce a pie chart and a bar chart based on data concerning the directors of the films of the Three Stooges. Answer all questions (which appear in red) in complete sentences – you are trying to convince me that you understand the material and that you can communicate your understanding clearly. The Three Stooges had a number of different directors In the 190 films that they made with Columbia Pictures between 1934 and 1959. Here is a table of data which includes several of the directors, along with the number of films they directed: Director # of Films Directed Del Lord 39 Preston Black 7 Charles Chase 5 Jules White 104 Edward Bernds 25 Other 10 You will create a pie chart and a bar graph which reflects the information in this table. You will then be asked a few questions about the results. Start Minitab by clicking on the start button at the lower left of the screen. From All Programs, choose Statistical Programs and find Minitab in the list. Once Minitab starts, you will see a mostly clear white window at the top labeled Session and a lower window labeled Worksheet 1. You will enter the data in the worksheet window. Here are the steps to enter the data. In column 1 (C1) enter the directors’ names in the cells (order does not matter). You can use the edit keys (the four keys with the arrows on them) to move between cells. The name of the column will change to C1-T since you have entered text in that column. Then enter the number of films directed by each person in column 2 (C2) in the corresponding position. You now have the data (both categorical and quantitative). Here are the commands to create the pie chart. Click on the Graph tab and select Pie Chart from the pull down menu. Select “Chart values from a table.” Click in the “Categorical variable” box, click on C1 in the left hand box and then click on the Select button. Click in the “Summary variables” box, click on C2 in the left hand box

and then click the Select button again. Minitab now has the information it needs to create a pie chart. However, let’s make it look nice! To enter labels for the pie slices, click Labels and enter a title in the appropriate place. While still in the Labels menu, click on the “Slice Labels” tab and under “Label pie slices with” select “Category name.” Click OK. Minitab now has the data, the title, and the labels it needs to create the desired pie chart. Click OK and Minitab will create the pie chart. Now you will insert the pie chart into this Word document. Increase the size of the window containing the pie chart. What happens when you put the mouse arrow over a region of the pie chart? Insert your answer here (in complete sentences). A small window pops up with that region (slice or sector) of the pie as a percentage of the whole pie, reflecting the percentage of the data which falls in the corresponding category. Click on the File tab and select “Save Graph As.” In the “Save As” menu, change the “Save as type” to a graphics format (such as JPG or BMP). Change the “Save in” and “File name” information until it is what you want (be careful to save the file in a place you can find it). Do not close Minitab, since you will make a bar chart using the same data you have already entered. Now, while in Word, use the Insert tab to insert a Picture, “From File” to put the pie chart here:

How would you describe the distribution given by the bar chart? This is a bad question! Bar charts do not have distributions (though histograms do). Any alleged distribution would change by simply rearranging the order in which the directors appear along the horizontal axis. How can you tell you have a bar chart and not a histogram? In a bar chart, there are spaces between the bars and there are no such spaces in a histogram. Since the horizontal axis is labeled with names, a quantitative variable is represented along that axis and a histogram involves two quantitative variables. Which do you find more informative, the pie chart or the bar chart? Well, the bar chart presents the actual number of films directed, whereas the pie chart only contains information about percentages and not raw numbers (in fact, you cannot tell how many Stooge films there are simply by looking at the pie chart, but you can by looking at the bar chart – if you are willing to do some addition). You can tell the relative sizes of the categorical variable in the pie chart by considering areas of sectors of the disk, and in the bar chart by considering heights of bars. Your opinions may vary on the answer to this one..