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Section 12.2

Chapter 12. Section 12.2. Exercise #1. Construct a bar graph for the number of transplants of various types performed for a specific year. Type. Number. Kidney. 11,390. Liver. 3,653. Pancreas. 844. Heart. 2,340. Lung. 737. y. 12,000. 10,000. 8,000. Number of transplants. 6,000.

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Section 12.2

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  1. Chapter 12 Section 12.2 Exercise #1

  2. Construct a bar graph for the number of transplants of various types performed for a specific year.

  3. Type Number Kidney 11,390 Liver 3,653 Pancreas 844 Heart 2,340 Lung 737 y 12,000 10,000 8,000 Number of transplants 6,000 4,000 2,000 x Kidney Liver Pancreas Heart Lung Organ type Source: U.S.A. Today 

  4. Chapter 12 Section 12.2 Exercise #5

  5. The frequency distribution shows the number of freshman, sophomores, juniors and seniors who have part-time jobs after school. Construct a pie graph for the data.

  6. (f) degrees = 360° Rank Frequency (f) n 12 Freshman 12 360° 90 25 360° Sophomores 25 90 36 360° Juniors 36 90 17 360° Seniors 17 90 n = 90 = 48° = 100° = 144° = 68°

  7. (f) percent = 100% Rank Frequency (f) n 12 Freshman 12 100% 90 25 100% Sophomores 25 90 36 100% Juniors 36 90 17 100% Seniors 17 90 n = 90 = 13% = 28% = 40% = 19%

  8. Rank Frequency (f) degrees percent 48º 13% Freshman 12 100º 28% Sophomores 25 144º 40% Juniors 36 68º 19% Seniors 17 n = 90 Freshman 13% Seniors 19% Sophomores 28% Juniors 40%

  9. Chapter 12 Section 12.2 Exercise #7

  10. In a study of 100 women, the numbers shown indicate the major reason why each woman worked outside the home. Construct a pie graph for the data and analyze the results.

  11. (f) degrees = 360° Reason Number (f) n 62 62 360° Support self / family 100 18 360° Extra money 18 100 Something different to do 12 360° 12 100 8 360° Other 8 100 n = 100 = 223.3° = 64.8° = 43.2° = 28.8°

  12. (f) percent = 100% Reason Number (f) n 62 62 100% Support self / family 100 18 100% Extra money 18 100 Something different to do 12 100% 12 100 8 100% Other 8 100 n = 100 = 62% = 18% = 12% = 8%

  13. Reason Number (f) degrees % 233.3º 62% Support self/family 62 64.8º 18% Extra money 18 43.2º 12% Something different 12 28.8º 8% Other 8 n = 100 Something different 12% Other 8% Support self/family 62% Extra money 18%

  14. Chapter 12 Section 12.2 Exercise #9

  15. For 108 randomly selected college applicants, the frequency distribution shown for entrance exam scores was obtained. Construct a histogram and frequency polygon for the data.

  16. Class Limits Frequency 9098 6 99107 22 108116 43 117125 28 126134 9 y 50 40 30 20 10 Frequency 9098 117125 99107 126134 108116 x Scores

  17. Class Limits Frequency 9098 6 99107 22 108116 43 117125 28 126134 9 98 + 90 = 94 2 99 + 107 = 103 2 126 + 134 = 130 117 + 125 = 121 108 + 116 = 112 2 2 2 Midpoints:

  18. Midpoint Class Limits Frequency 94 9098 6 103 99107 22 112 108116 43 121 117125 28 130 126134 9 y 50 40 30 20 10 Frequency 85 94 103 112 121 130 139 x Scores 

  19. Chapter 12 Section 12.2 Exercise #13

  20. The data represent the number of babies born in a local hospital’s maternity ward for the years listed. Draw a time series graph for the data.

  21. Year 1980 1985 1990 1995 2000 Number 1981 2895 3027 1651 1432 y 3500 3000 2500 2000 1500 1000 500 Frequency x 1980 1985 1990 1995 2000 Year

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