2. Describing Data with Tables and Graphs
Dot Plots
Practice this topic
- Multiple Choice
The dotplot below shows the number of books read in a month by students in a college class. Find the most and least frequent number of books read.
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Compare the two dotplots, which give the number of siblings students have in Class A and Class B. Which class has more students with 2 siblings?
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Graphing Data Sets In Exercises 17–32, organize the data using the indicated type of graph. Describe any patterns.
Life Spans of Houseflies Use a dot plot to display the data, which represent the life spans (in days) of 30 houseflies.
9 9 4 11 10 5 13 9 7 11 6 8 14 10 6
10 10 7 14 11 7 8 6 13 10 14 14 8 13 10
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Phone Screen Sizes Display the data below in a dot plot. Describe the differences in how the stem-and-leaf plot and the dot plot show patterns in the data.
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In Exercises 7 and 8, use the data set shown in the table at the left, which represents the pollution indices (a unitless measure of pollution ranging from 0 to 100) for 24 U.S. cities. (Adapted from Numbeo)
Use a dot plot to display the data set. Describe any patterns.
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The heights (in feet) and the number of stories of the ten tallest buildings in New York City are listed. Use a scatter plot to display the data. Describe any patterns. (Source: Emporis)
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