Maintainence Management Analysis CDC 2r051 Volume 3
This is volume 3 study questions for Airman to use to study and pass to certify them as a 5 level analyst.
- 1.(401) A natural number is stated as a positive number that
- A.
A. has any actual value from zero to infinity.
- B.
B. has its own unique properties.
- C.
C. can be added or subtracted.
- D.
D. can be summed.
- 2.
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- A.
A. 0.3.
- B.
B. 8.4.
- C.
C. 15.0.
- D.
D. 30.0.
- 3.(401) When using natural numbers, a number placed directly behind brackets, with no sign of operation between, indicates that
- A.
A. you must multiply and divide before adding and subtracting.
- B.
B. you can perform the calculation with or without the brackets.
- C.
C. the brackets should be removed before performing the calculation.
- D.
D. the quantity within the brackets must be multiplied by that number.
- 4.(401) Which phrase is true regarding signed numbers?
- A.
A. Only whole numbers are used.
- B.
B. Negative numbers are not used.
- C.
C. Dividing by zero is permitted.
- D.
D. Both positive and negative numbers have values.
- 5.(401) Compute the difference of the signed numbers –17 – (–10).
- A.
A. +3.0.
- B.
B. –3.0.
- C.
C. –7.0.
- D.
D. –27.0.
- 6.(401) How do you write: “The square root of 25 is 5.” as a mathematical expression?
- A.
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- B.
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- C.
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- D.
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- 7.(402) What is 22 percent of 12?
- A.
A. 1.83.
- B.
B. 2.64.
- C.
C. 18.30.
- D.
D. 26.40.
- 8.(403) Which statistical technique is an example of descriptive statistics?
- A.
A. Probability.
- B.
B. Extrapolation.
- C.
C. Trend analysis.
- D.
D. Measurement scales.
- 9.(404) In the equation Y=X+2, what does the symbol “Y” represent?
- A.
A. Exponent.
- B.
B. Inequality.
- C.
C. Subscript.
- D.
D. Variable.
- 10.
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- A.
A. 64.
- B.
B. 24.
- C.
C. 12.
- D.
D. 7.
- 11.(405) 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.
A. biased sample.
- B.
B. random sample.
- C.
C. sampling theory.
- D.
D. sampling application.
- 12.(405) If you construct a QLP retrieval to select every 8th record, you are using which sampling technique?
- A.
A. Selective.
- B.
B. Stratified.
- C.
C. Systematic.
- D.
D. Purposeful.
- 13.(406) Which measurement scale consists of equal intervals between scale values and an arbitrary zero point?
- A.
A. Ratio.
- B.
B. Nominal.
- C.
C. Ordinal.
- D.
D. Interval.
- 14.(406) You are given two pieces of test equipment that must be loaded on a pallet. One 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 weigh?
- A.
A. 375.0 pounds.
- B.
B. 415.5 pounds.
- C.
C. 437.5 pounds.
- D.
D. 500.0 pounds.
- 15.(406) Given measurements of 5.0 hours, 10.0 hours, 15.0 hours, and 20.0 hours, what type of data and measurement scale would you use to classify these data items?
- A.
A. Discrete; ratio.
- B.
B. Discrete; interval.
- C.
C. Continuous; ratio.
- D.
D. Continuous; interval.
- 16.(407) The second step in making a frequency distribution is to
- A.
A. determine the range of the data.
- B.
B. determine the class interval size.
- C.
C. range the data from largest to smallest.
- D.
D. range the data from smallest to largest.
- 17.(407) With a noncumulative frequency distribution range of 3.6, which class interval will give you 18 classes?
- A.
A. 0.1.
- B.
B. 0.2.
- C.
C. 0.3.
- D.
D. 0.4.
- 18.(407) One way of comparing class frequencies to the total frequency is by
- A.
A. indirect comparison.
- B.
B. direct comparison.
- C.
C. visual inspection.
- D.
D. percentage.
- 19.(408) What does each rectangle in a histogram represent?
- A.
A. Value of the data.
- B.
B. One class of data.
- C.
C. Upper and lower limits.
- D.
D. Number of frequencies.
- 20.(408) When constructing a frequency polygon, what are plotted against the corresponding midpoints?
- A.
A. Series of rectangles.
- B.
B. Individual values of data.
- C.
C. Lower limit and baseline.
- D.
D. Frequencies of the various class intervals.
- 21.(409) What measure of central tendency is the most typical value in a distribution?
- A.
A. Mean.
- B.
B. Mode.
- C.
C. Median.
- D.
D. Weighted mean.
- 22.(409) The mode is the only measure of central tendency that can be used with what measurement scale?
- A.
A. Ratio.
- B.
B. Interval.
- C.
C. Ordinal.
- D.
D. Nominal.
- 23.(410) Analysts frequently use the median because it is easy to compute and gives a better picture of data than the mean and mode when data are
- A.
A. normal.
- B.
B. skewed.
- C.
C. incomplete.
- D.
C. incomplete.
- 24.(410) The median cannot be used with data from which measurement scale?
- A.
A. Nominal.
- B.
B. Interval.
- C.
C. Ordinal.
- D.
D. Ratio.
- 25.(410) What must you do first to determine the median from ungrouped data?
- A.
A. Arrange the data in classes.
- B.
B. Determine the numerical average.
- C.
C. Determine the total of the values.
- D.
D. Arrange the data in ascending order.
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