Statistics Chapter 2 Quiz

14 Questions | Total Attempts: 552

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Statistics Chapter 2 Quiz

Please answer the following questions. Follow directions.


Questions and Answers
  • 1. 
    The measures of central tendency measure which of the following:
    • A. 

      The average or the middle

    • B. 

      The spread of the data from the average

    • C. 

      The difference between the highest and the lowest of the data

    • D. 

      The number of data being used in an experiment

  • 2. 
    The horizontal scale of a histogram is a great place to locate which of the following
    • A. 

      Frequencies in the various classes

    • B. 

      Identification of the population or sample of concern

    • C. 

      Values for the class boundaries or class midpoints

    • D. 

      All of the above

  • 3. 
    The percentages in a pareto diagram are __________________________.
  • 4. 
    A pareto diagram is popular in ___________________________________________ applications
  • 5. 
    _______________________________ are values that divide the ranked data into quarters
  • 6. 
    The first step in determining a percentile is to rank the data from highest to lowest.
    • A. 

      True

    • B. 

      False

  • 7. 
    A normal histogram will be
    • A. 

      Skewed to one side where one tail is stretched out longer than the other

    • B. 

      Every value appears with equal frequency

    • C. 

      There is no tail on the side of the class with the highest frequency

    • D. 

      One side will mirror the other side

  • 8. 
    The number of times an "x" value appears
    • A. 

      Distribution

    • B. 

      Frequency

    • C. 

      Ogive

    • D. 

      Mode

  • 9. 
    A measure of position that allows you to see an overall "snapshot" of the data
    • A. 

      Z-scores

    • B. 

      Percentiles

    • C. 

      Quartiles

    • D. 

      5-number summary

  • 10. 
    Kent scored a 92 on his test.  The mean score was an 87 with a standard deviation of 6.2.  What was the z-score for Kent's score.  **      Remember that z-scores are rounded to two decimal places
  • 11. 
    The box and whiskers graph is a preferred way to display a 5-number summary
    • A. 

      True

    • B. 

      False

  • 12. 
    Which of the following would be information contained in a five number summary?
    • A. 

      The highest and lowest data value

    • B. 

      The median

    • C. 

      Quartile 1 and 3

    • D. 

      First and third choices only

    • E. 

      First, second, and third choices

  • 13. 
    Briefly explain the steps for finding a quartile or a percentile.  Include the steps for when you obtain an integer or a decimal for the depth. 
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