2r051 CDC Volulme 3

20 Questions | Total Attempts: 134

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CDC Quizzes & Trivia

5 Level CDC Volume 3


Questions and Answers
  • 1. 
    1. What is the value of 5 / 2 x 6?
    • A. 

      0.3

    • B. 

      8.4

    • C. 

      15.0

    • D. 

      30.0

  • 2. 
    2. Compute the difference of the signed numbers -17 -(-10).
    • A. 

      +3.0

    • B. 

      -3.0

    • C. 

      -7.0

    • D. 

      -27.0

  • 3. 
    3. Eighty is 40 percent of what number?
    • A. 

      200

    • B. 

      320

    • C. 

      400

    • D. 

      500

  • 4. 
    4. What statistical method uses only a sample of data?
    • A. 

      Inferential

    • B. 

      Descriptive

    • C. 

      Data survey

    • D. 

      Randomization

  • 5. 
    5. Which action would require the use of the descriptive statistics method?
    • A. 

      Draw a conclusion about data

    • B. 

      Choose a random sample of data.

    • C. 

      Summarize a large amount of data.

    • D. 

      Generalize from the results of small samples.

  • 6. 
    6. In the equation Y=X+2, what does the symbol "Y" represent?
    • A. 

      Exponent.

    • B. 

      Inequality.

    • C. 

      Subscript.

    • D. 

      Variable.

  • 7. 
    7. What is the value of 43?
    • A. 

      64.

    • B. 

      24.

    • C. 

      12.

    • D. 

      7.

  • 8. 
    8. Which is the best example of a population in statistical language?
    • A. 

      Yearly B-1 failures at Dyess AFB.

    • B. 

      Weekly C-130 failures at Scott AFB.

    • C. 

      Monthly E-3C failures at Tinker AFB.

    • D. 

      Total T-38s failures across the Air Force

  • 9. 
    9. A sample of a population that is taken in such a manner that each value has an equal chance of being selected is referred to as a
    • A. 

      Biased sample.

    • B. 

      Random sample.

    • C. 

      Sampling theory.

    • D. 

      Sampling application.

  • 10. 
    10. What are measures, such as the mean or median, called if they are computed from a sample?
    • A. 

      Statistics.

    • B. 

      Parameter.

    • C. 

      Population.

    • D. 

      Distribution.

  • 11. 
    11. Which measurement scale consist of equal intervals between scale values and an arbitrary zero point?
    • A. 

      Ratio.

    • B. 

      Nominal.

    • C. 

      Ordinal.

    • D. 

      Interval.

  • 12. 
    12. You are given two pieces of test equipment that must be loaded on a pallet. Once piece weighs 125 pounds and the other piece weighs 3.5 times as much. Using the ratio measurement scale, how much does the second piece of equipment weight?
    • A. 

      375.0 pounds.

    • B. 

      415.5 pounds

    • C. 

      437.5 pounds

    • D. 

      500.0 pounds

  • 13. 
    13. The second step in making a frequency distribution is to
    • A. 

      Determine the range of the data.

    • B. 

      Determine the class interval size.

    • C. 

      Range the data from largest to smallest.

    • D. 

      Rang the data from smallest to largest.

  • 14. 
    14. Given the following noncumulative frequency distribution, which class interval will give you 18 classes?
    • A. 

      0.1.

    • B. 

      0.2.

    • C. 

      0.3.

    • D. 

      0.4.

  • 15. 
    15. If you contruct a frequency distribution and the class interval is too large, the result is
    • A. 

      A loss of detail.

    • B. 

      Side gaps between items.

    • C. 

      Overlapping lower limits.

    • D. 

      A loss of smoothness and simplicity.

  • 16. 
    16. When constructing a frequency polygon, what are plotted against the corresponding midpoints?
    • A. 

      Series of rectangles.

    • B. 

      Individual values of data.

    • C. 

      Lower limit and baseline.

    • D. 

      Frequencies of the various class intervals.

  • 17. 
    17. Which graphical method gives the best representation of the number of individual values in each class?
    • A. 

      Histogram.

    • B. 

      Frequency polygon.

    • C. 

      Overlapping polygon.

    • D. 

      Overlapping histogram.

  • 18. 
    18. What measure of central tendency is the most typical value in a distribution?
    • A. 

      Mean.

    • B. 

      Mode.

    • C. 

      Median.

    • D. 

      Weighted mean.

  • 19. 
    19. What is the mode of a sample consisting of these values: 6,9,10,3,2,6 and 25?
    • A. 

      2.

    • B. 

      6.

    • C. 

      8.

    • D. 

      18.

  • 20. 
    20. The median cannot be used with data from which measurement scale?
    • A. 

      Nominal.

    • B. 

      Interval.

    • C. 

      Ordinal.

    • D. 

      Ratio.

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