Section 6.2 - Lines Of Best Fit

10 Questions | Total Attempts: 905

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Section 6.2 - Lines Of Best Fit - Quiz

Complete the following questions


Questions and Answers
  • 1. 
    This scatter plot shows the annual profits for the past ten years for Ellen's business designing greeting cards.  Use the graph to estimate the profit in the 9th year.
    • A. 

      $12 500

    • B. 

      $13 200

    • C. 

      $13 500

    • D. 

      $14 000

  • 2. 
    This scatter plot shows daily low temperature s in Banff National Park for the first ten days of July. What is the equation for the line of best fit?
    • A. 

      Y = x + 4

    • B. 

      Y = 7/3x + 2/3

    • C. 

      Y = 7/3x + 16/3

    • D. 

      Y = x + 2

  • 3. 
    The scatter plot shows the fuel consumption for vehicles of various weights.  Use the graph to estimate the weight of a car that consumes fuel at a rate of 5L / 100km. 
    • A. 

      1.0 tonne

    • B. 

      1.06 tonnes

    • C. 

      1.1 tonnes

    • D. 

      1.6 tonnes

  • 4. 
    The following data show the video game rankings of two students, from least favorite (1) to most favorite (10).  Which is the equation for the line of best fit?
    • A. 

      Y = -0.75x + 9.75

    • B. 

      Y = 0.75x + 8.25

    • C. 

      Y = 0.75x + 9.75

    • D. 

      Y = -0.75x + 8.25

  • 5. 
    The table shows the Olympic gold medal performance in high jump from 1948-1980.  Which shows a line of best fit for the data?
    • A. 

      Graph a

    • B. 

      Graph b

    • C. 

      Graph c

    • D. 

      Graph d

  • 6. 
    The table and scatter plot show the mean heights of children in Kalama,  Egypt, a village where nutrition is being studied.  What is an equation for the line of best fit?
    • A. 

      Y = 0.15x + 74.15

    • B. 

      Y = 0.65x + 64.65

    • C. 

      Y = -0.65x + 89.35

    • D. 

      Y = 0.65x - 31.05

  • 7. 
    This scatter plot shows average ticket sales for different summer temperatures.  Use the graph to estimate the number of tickets sold on a day when it is 35C
    • A. 

      465

    • B. 

      490

    • C. 

      540

    • D. 

      600

  • 8. 
    The following data shows the price per carat for various weights of loose diamonds.  Which two points could you use to determine the equation for the line of best fit?
    • A. 

      (0.3, 1779) and (43, 33 101)

    • B. 

      (0.5, 2813) and (3, 14 021)

    • C. 

      (2, 12 823) and (3, 14 021)

    • D. 

      (0.9, 4929) and (2, 12 823)

  • 9. 
    The data shows the price and manufacturing time for various bowls.  Write the equation you could use to determine the price for a bowl that takes 45 minutes to manufacture.
    • A. 

      45 = 2.7x - 4.8b

    • B. 

      Y = 2.7x - 4.8(45)

    • C. 

      Y = 2.7(45) - 4.8b

    • D. 

      45y = 2.7x - 4.8b

  • 10. 
    Ananya is member of the school swim team.  The average number of laps she swims during practice for various times is shown below.  Use a line of best fit to estimate how long it will take Ananya to swim 100 laps. 
    • A. 

      52 min

    • B. 

      55 min

    • C. 

      59 min

    • D. 

      160 min

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