2r051 CDC Volulme 3

20 Questions | By Elduderado3 | Updated: Mar 20, 2022 | Attempts: 185

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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.