Section 6.4 - Reasoning About Data

10 Questions | Total Attempts: 245

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Section 6.4 - Reasoning About Data - Quiz

Complete the following questions


Questions and Answers
  • 1. 
    A data set the shows no clear trend or pattern can be used to
    • A. 

      Write a conjecture

    • B. 

      Support a conjecture

    • C. 

      Reject a conjecture

    • D. 

      Find an outlier

  • 2. 
    Which of these lines or curves of best fit would support a conjecture that as outside temperature increases, the fewer people go to the athletic club
    • A. 

      A line of best fit that shows a positive slope

    • B. 

      A line of best fit that shows a negative slope

    • C. 

      A line of best fit that shows a zero slope

    • D. 

      A curve of best fit that shows a slight upward curve

  • 3. 
    Keren used the data in the table to make a conjecture about whether starting teacher salary and the amount spent per pupil are related.  To assure that her conjecture is valid, what should Keren do?
    • A. 

      Rewrite her conjecture to include the outlier

    • B. 

      Extend the curve of best fit

    • C. 

      Use a line of best fit instead of a curve

    • D. 

      Gather more data

  • 4. 
    When is it not valid to use the line of best fit to make prdications about the general population?
    • A. 

      When the data set is small

    • B. 

      When the data shows a smooth curve

    • C. 

      When there is an outlier

    • D. 

      When there is a negative slope

  • 5. 
    To support a conjecture, a plot must show which of the following?1) A positive correlation 2) A negatice correlation 3) A trend or pattern
    • A. 

      1 only

    • B. 

      2 only

    • C. 

      3 only

    • D. 

      1, 2, and 3

  • 6. 
    Rebecca collected this data of the math grades of grade 9 students and the number of siblings each student has.  What conjecture is supported by the data?
    • A. 

      People with fewer siblings do better in math

    • B. 

      People with 3 or more siblings do worse in math

    • C. 

      People with no siblings do the best in math

    • D. 

      People with more siblings do better in math

  • 7. 
    Which conjecture is supported by the data?
    • A. 

      The shorter the time between eruptions, the longer the eruption

    • B. 

      The longer the time between eruptions, the longer the eruption

    • C. 

      The longer the time between eruptions, the shorter the eruption

    • D. 

      The time between eruptions remains constant, regardless of the length of the eruption.

  • 8. 
    Suppose that you plot two variables on a scatter plot, and then draw a curve of best fit.  What does it mean if the curve faces downward?
    • A. 

      The data show no relation

    • B. 

      The data contradict the conjecture

    • C. 

      There is not enough data

    • D. 

      The data show an inverse relationship

  • 9. 
    What is the relationship between the variables
    • A. 

      As temperature increases, the number of chirps decreases

    • B. 

      The number of chirps remains constant regardless of temperature

    • C. 

      The number of chirps increases as temperature increases

    • D. 

      There is no relationship between the variables

  • 10. 
    Which point is an outlier for the data set?
    • A. 

      (16, 0.86)

    • B. 

      (1.2, 0.94)

    • C. 

      (114, 0.16)

    • D. 

      (87.6, 1.1)

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