Chapter 3 Describing Data Visually

Chapter 3 Describing Data Visually - Click to edit Master...

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Unformatted text preview: Click to edit Master subtitle style Professor Thomas R. Sexton Professor Thomas R. Sexton 11 Describing Data Visually Professor Thomas R. Sexton College of Business Stony Brook University Professor Thomas R. Sexton Professor Thomas R. Sexton 22 Data Set n We will use Fall 2005 Undergraduate Statistics Student Survey Doane.sx to demonstrate techniques for describing data visually. Professor Thomas R. Sexton Professor Thomas R. Sexton 33 Displaying Data n One variable Frequency tables Bar charts Pareto charts Histograms Stem-and-leaf plots Ogives (cumulative distribution plots) Pie charts n Two variables Contingency tables Scatter plots Professor Thomas R. Sexton Professor Thomas R. Sexton 44 Frequency Tables n Useful for summarizing a distribution n Discrete variables Shows how many observations of each value n Continuous variables Shows how many observations in each of several intervals Professor Thomas R. Sexton Professor Thomas R. Sexton 55 Discrete Variable Frequency Distribution of Exercise Frequency of Exercise Cumulative Value Freq Percent Freq Percent Not at All 22 11.4 22 11.4 Sometimes 87 45.1 109 56.5 Regularly 84 43.5 193 100.0 Total 193 100.0 Professor Thomas R. Sexton Professor Thomas R. Sexton 66 Bar Chart Professor Thomas R....
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Chapter 3 Describing Data Visually - Click to edit Master...

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