Introduction To Statistics Quiz 1

10 Questions | Total Attempts: 10304

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Introduction To Statistics Quiz 1

Chapter 1 Quiz from Introduction to Statistics by Ronald E. Walpole


Questions and Answers
  • 1. 
    The science of statistics includes which of the following:
    • A. 

      Organizing data

    • B. 

      Presenting data

    • C. 

      Interpreting data

    • D. 

      All of the above

  • 2. 
    In descriptive statistics our main objective is to
    • A. 

      Describe the population

    • B. 

      Describe the data we collected

    • C. 

      Infer something about the population

    • D. 

      Compute an average

  • 3. 
    Which of the following statements is true regarding a population?
    • A. 

      It must be a large number of values

    • B. 

      It must refer to people

    • C. 

      It is a collection individuals, objects, or measurements

    • D. 

      None of the above

  • 4. 
    Which of the following statements is true regarding a sample?
    • A. 

      It is a part of population

    • B. 

      It must contain at least five observations

    • C. 

      It refers to descriptive statistics

    • D. 

      All of the above are correct

  • 5. 
    A qualitative variable
    • A. 

      Always refers to a sample

    • B. 

      Is not numeric

    • C. 

      Has only two possible outcomes

    • D. 

      All of the above are correct

  • 6. 
    A discrete variable is
    • A. 

      An example of a qualitative variable

    • B. 

      Can assume only whole number values

    • C. 

      Can assume only certain clearly separated values

    • D. 

      Cannot be negative

  • 7. 
    A nominal scale variable is
    • A. 

      Usually the result of counting something

    • B. 

      Has a meaningful zero point

    • C. 

      May assume negative values

    • D. 

      Cannot have more than two categories

  • 8. 
    The ratio scale of measurement
    • A. 

      Usually involves ranking

    • B. 

      Cannot assume negative values

    • C. 

      Has a meaningful zero point

    • D. 

      Is usually based on counting

  • 9. 
    The ordinal scale of measurement
    • A. 

      Has a meaningful zero point

    • B. 

      Is based on ranks

    • C. 

      Cannot assume negative values

    • D. 

      All of the above

  • 10. 
    Which of the following are examples of continuous variables?
    • A. 

      Birth weight of babies

    • B. 

      Distance between tollbooths on the New Jersey Turnpike

    • C. 

      Age of the CEOs of the Fortune 500 companies

    • D. 

      All of the above