101 Ch. 3 - Bar Charts Displays either number or percentage...

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Chapter Three Displaying Categorical Data
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Categorical Data Categorical variables are variables that cannot be measured numerically Examples Gender Religion Colors Race Occupation Emotions
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Describing Categorical Data Pie Charts Bar Charts
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Pie Chart Displays percentage of whole (for each category) Must include all possible categories
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Example of Pie Chart 2004 Enrollment Agriculture 12% Business 17% Design 8% Education 7% Engineering 22% Liberal Arts 28% 12% 17% 8% 7% 22% 6% 28% Agriculture Business Design Education Engineering LA Science
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Unformatted text preview: Bar Charts Displays either number or percentage for each category Do not need to include all possible categories Example of a Bar Chart Number of students from Iowa and beyond Iowa: 16424 Non-Iowa U.S.: 4157 Foreign: 741 16424 4157 741 2000 4000 6000 8000 10000 12000 14000 16000 18000 Iowa Non Iowa US Foreign Cautions About Displays Beware of misleading graphics The Area Principle In a statistical display, each data value should be represented by the same amount of area....
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101 Ch. 3 - Bar Charts Displays either number or percentage...

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