Minitab

# Minitab - 1 Examples of Graphs for Qualitative Data In the...

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Unformatted text preview: 1 Examples of Graphs for Qualitative Data: In the Anderson, Sweeny, and Williams data sets for Chapter 2, there is a data set showing the show being viewed by 50 viewers in a Nielsen sample. Click on FILE > OPEN WORKSHEET and locate the file “Nielsen” in the chapter two folder. Click on STAT > TABLES > TALLY INDIVIDUAL VARIABLES I want to get a count of the number of people watching each of these television shows, so I enter TVShow in the data window and click the “Counts” box. Click Ok. In the session window you will see this: Tally for Discrete Variables: TVShow TVShow Count Charmed 4 Chicago Hope 7 Frasier 15 Millionaire 24 N= 50 Starting with “Charmed” and ending with “24” cut and past these counts into your spreadsheet. 2 {hint: remove the space between “Chicago” and “Hope” to make it work. Then add it back.} Once you have done so you can add some variable names by simply putting the cursor at the head of the column and typing. 3 Now we can make some pictures. Click on GRAPH > PIE CHART We did not have to go to the trouble of using TALLY for this chart. We can proceed as follows, adding a title to the Pie Chart by clicking on the button “Labels.” We can also ask Minitab to label the pie slices. In the “Labels” box, click on the tab “Slice Labels.” 4 Now click on OK > OK, and Minitab generates the following Graph. 5 Had we originally been given the data as it appears in columns 2 and 3, already tallied, we could have generated the graph in the following way. 48.0% Millionaire 30.0% Frasier 14.0% Chicago Hope 8.0% Charmed Category Charmed Chicago Hope Frasier Millionaire Audience Share 6 Another thing we can do with this data is make a bar chart. Click on GRAPH > BAR CHART. Select “Counts of unique variable” and “Simple.” 7 Click on OK. Select your variable and add a label by clicking on the box “Labels.” 8 You will get this picture when you click on OK > OK. If we TVShow Count Millionaire Frasier Chicago Hope Charmed 25 20 15 10 5 Size of the Television Audience 9 wanted change the Y axis to measure market share in percent, rather than as a count, Minitab will do this for you. Proceed as before, but click on the box “Bar Chart Options.” Clicking on OK > OK gives this graph. If the data TVShow Percent Millionaire Frasier Chicago Hope Charmed 50 40 30 20 10 Size of the Television Audience Percent within all data. 10 had been given to you already tallied, as in columns 2 and 3, we could have made a chart by clicking on BAR CHARTS and then selecting not “Counts of Unique Values,” but “Values from a table,” along with “Simple.” Clicking on OK, we continue thusly: 11...
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Minitab - 1 Examples of Graphs for Qualitative Data In the...

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