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    1.1 Constructing and Interpreting Visual Displays of Data Answers

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    elmoelmoelmo2566
    1. This document contains sample answers to exercises from math and statistics textbooks. 2. The answers include calculations, graphs, and explanations for a variety of question types including word problems, data interpretation, and graph construction. 3. Many of the answers involve analyzing and summarizing data from tables, charts, and other visual representations.

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    1.1 Constructing and Interpreting Visual Displays of Data Answers

    Uploaded by

    elmoelmoelmo2566
    78 views2 pages
    1. This document contains sample answers to exercises from math and statistics textbooks. 2. The answers include calculations, graphs, and explanations for a variety of question types including word problems, data interpretation, and graph construction. 3. Many of the answers involve analyzing and summarizing data from tables, charts, and other visual representations.

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    1.1 Constructing and Interpreting Visual Displays of Data Answers

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    1.1 Constructing and Interpreting Visual Displays of Data Answers

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    1. This document contains sample answers to exercises from math and statistics textbooks. 2. The answers include calculations, graphs, and explanations for a variety of question types including word problems, data interpretation, and graph construction. 3. Many of the answers involve analyzing and summarizing data from tables, charts, and other visual representations.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    78 views2 pages

    1.1 Constructing and Interpreting Visual Displays of Data Answers

    Uploaded by

    elmoelmoelmo2566
    1. This document contains sample answers to exercises from math and statistics textbooks. 2. The answers include calculations, graphs, and explanations for a variety of question types including word problems, data interpretation, and graph construction. 3. Many of the answers involve analyzing and summarizing data from tables, charts, and other visual representations.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 2

    Answers

    Chapter 1
    1.1 Exercises, page 11
    1. (a) Each soccer ball represents 2 goals. (b) Jared: 14, Phil: 10, Beth: 8, Talia: 16 (c) Example: Sometimes you might have to use part of the symbol and then it is hard to tell the fraction of the symbol drawn. 2. (a) Each tick represents 3.5 students. (b) Have each tick represent a whole number, say 4 or 5. (c) about 542 3. (a)
    Number of Hours 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 Tally Frequency 2 6 9 1 5 0 2 0 0 0 1 Television Viewing 14 9 8 7 6 Frequency 5 4 3 2 1 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 Frequency 12 10 8 6 4 2 0 2:30 3:00 3:30 4:00 4:30 5:00 5:30 Song Length (min:s) 5:005:29 2

    6.

    Favourite Sport 10% 10% 20%

    33.3% Volleyball Badminton Swimming

    26.7% Football Tennis

    7. (a)
    Class Interval 2:302:59 3:003:29 3:303:59 4:004:29 4:304:59 Frequency 1 4 8 14 5

    (b) 93.3%

    (c) You do not need to check every songs length. (d) histogram Length of Songs

    (b)

    8. (a)

    Stem 1 2 3 4 5 6 7 8 9 10 11 12

    Leaf 6 145 0334 8 23

    Number of Hours/Day

    (d) 3.1 h/day; Most students underestimated their television watching time. 4. (a) Label on the vertical axis. (b) Both display frequency of the data. (c) Histograms display frequencies for continuous intervals, while bar graphs show frequencies for each discrete horizontal-axis value. (d) When data are in intervals, not discrete. 5. (a) French Language 16.7%, English Fiction 27.8%, English Non-Fiction 44.4%, Reference 5.6%, Spanish Language 5.5% (b) French Language $20 875, English Fiction $34 750, English Non-Fiction $55 500, Reference $7000, Spanish Language $6875

    11266 9 8 26899 0268 228

    (b) 16

    (c) 40%

    430 ANSWERS

    9. (a)
    Cat

    Preferred Pet

    (b) The student council should report that only 31 of the 85 students polled said they will not go. 12. (a) No, you do not know if those who enjoy mathematics are the ones who will complete university. (b) Combine the graphs and give proportions of level of enjoyment of mathematics within the level of education. 13. (a) Proportion of infant deaths has been decreasing since 1948. 14. (a) The temperatures at the South Pole have remained basically the same from 1957 to 1987. 15. (a) 83% of people answered less than 6 questions correctly; 55% answered less than 4 questions correctly. (c) The higher the level of education a person has, the greater their chance of answering a question correctly.

    Dog

    Bird

    Fish

    Iguana

    Black represents Grade 9 student White represents Grade 12 student

    1.3 Exercises, page 37


    1. (a)
    Time of Revolution and Distance from Sun

    (b) (c)

    41 60 24

    or 68%

    = 80%; A lot more Grade 9 students have pets other than 30 cats and dogs. 10. (a) pie chart (b) bar graph (c) circle graph (d) bar or pie graph (e) bar graph 12. (a) (b) 315 Blood Types in Canada
    2.5% 1.5% 7.5% 7% 1% 36%

    40 35 30 Mean Distance from Sun (AU) 25 20 15 10 5

    0 38% A A+ O O+ B B+ 6%

    50

    100

    150

    200

    250

    Time of One Revolution (years)

    (b)
    AB AB+ 20 Mathematics in My School 18.2% Geometry and Discrete Math 44.2% AFIC Total Cost ($) 15

    Total Cost of Photos

    14. (a) Answers will vary; for example: AFIC: 80, Data Management: 68, Geometry: 33

    10

    37.5% Data Management

    10

    20

    30

    40

    50

    Number of Photos

    (b) Answers may vary. Circle graph is easier to compare. (c) More students are enrolled in AFIC than either of the other Grade 12 courses.

    (c)

    Average Speed and Number of Seats on Airplanes

    550

    1.2 Exercises, page 20


    1. 2. 3. 4. 5. 6. 7. 8. no yes no Males care less. no more females; 8 female, 4 male no more males
    4 11

    500 Average Speed (km/h) 450 400 350 0 100 200 300 400 500

    Number of Seats

    11. (a) Yes; If

    of the May Go group attend, you are above 55%.

    ANSWERS

    431

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