SECTION 2.2 More Graphs and Displays 65 30. Salaries Use a scatter plot to display the data shown in the table at the left. The data represent the number of students per teacher and the average teacher salaries (in thousands of dollars) of 10 school districts. 31. Engineering Degrees Use a time series chart to display the data shown in the table. The data represent the number of bachelor’s degrees in engineering (in thousands) conferred in the U.S. (Source: U.S. Deapartment of Education) Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 Degrees 93.1 98.7 103.0 109.0 115.1 123.9 133.8 140.7 146.3 32. Manufacturing Use a time series chart to display the data shown in the table. The data represent the percentages of the U.S. gross domestic product (GDP) that come from the manufacturing sector. (Source: U.S. Bureau of Economic Analysis) Year 2008 2009 2010 2011 2012 2013 Percent 12.2% 11.8% 12.0% 12.0% 11.9% 11.9% Year 2014 2015 2016 2017 2018 2019 Percent 11.7% 11.7% 11.2% 11.2% 11.2% 10.9% 33. Basketball Display the data below in a stem-and-leaf plot. Describe the differences in how the dot plot and the stem-and-leaf plot show patterns in the data. 72 74 76 78 80 82 84 Heights of Players on a College Basketball Team Inches 34. 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. Phone Screen Sizes (in inches) 5 0 0 Key: 50 0 = 5.0 5 55567889 6 00012344 6 556889 7 0 7 35. Favorite Season Display the data below in a Pareto chart. Describe the differences in how the pie chart and the Pareto chart show patterns in the data. (Source: Ipsos Public Affairs) Winter 8% Favorite Season of U.S. Adults Ages 18 and Older Spring 26% Summer 26% Fall 40% 36. Favorite Day of the Week Display the data below in a pie chart. Describe the differences in how the Pareto chart and the pie chart show patterns in the data. Number of people 3 6 9 12 15 Fri. Sun. Thu. Day Sat. Wed. Tues. Mon. Favorite Day of the Week Number of students per teacher Average teacher’s salary 16.6 66.4 22.8 45.4 24.3 72.5 16.2 50.9 15.6 55.2 20.6 56.7 13.2 77.0 22.2 59.8 23.0 46.0 14.1 45.4 TABLE FOR EXERCISE 30
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