A-34 ANSWERS b) 33 34 35 36 37 38 2016 2017 2018 2019 2020 2021 Percentage of the U.S. Population Completing Four or More Years of College Year Percentage 39. a) 0 20 40 Percent of U.S. Households with a Pet 60 80 100 70 67 2022 2019 41. Yes, the sum of its parts is 121% The sum of the parts of a circle graph should be 100% When the total percent of responses is more than 100% a circle graph is not an appropriate graph to display the data. A bar graph is more appropriate in this situation. SECTION 12.2, PAGE 779 11. b) Year Amazon Worldwide Revenue Revenue (billions $) 225 275 325 375 425 475 525 2019 2020 2021 2022 37. a) Year Age Median Age of the U.S. Population 0 5 10 15 20 25 30 35 40 2017 2018 2019 2020 2021 2022 b) Year Median Age of the U.S. Population Age 38.0 38.2 38.4 38.6 38.8 40.0 2017 2018 2019 2020 2021 2022 38. a) Percentage of the U.S. Population Completing Four or More Years of College Year Percentage 0 10 20 30 40 2016 2017 2018 2019 2020 2021 Number of Visits Number of Students 0 3 1 8 2 3 3 5 4 2 5 7 6 2 7 3 8 4 9 1 10 2
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