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Free CFA-Level-I Exam Braindumps (page: 151)

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PDF with 3963 Questions

A distribution has a mean of 7 and a range of -100 to +50. The distribution is ________.

  1. incomplete
  2. right skewed
  3. defective
  4. left skewed

Answer(s): D

Explanation:

The range of values is larger to the left of the mean. Hence, the distribution is left-skewed.



The distribution of a sample of the outside diameters of PVC gas pipes approximates a symmetrical, bell- shaped distribution. The mean outside diameter of the sample is 14.0 inches, and the standard deviation is 0.1 inches. About 68 percent of the outside diameters lie between what two amounts?

  1. 13.9 and 14.1 inches
  2. 13.8 and 14.2 inches
  3. 13.0 and 15.0 inches
  4. None of these answers
  5. 13.5 and 14.5 inches

Answer(s): A

Explanation:

Approximately 68% of observations will lie within plus and minus one standard deviation of the mean.



You borrow $100,000 at a mortgage rate of 8% per year. What's the annual payment you must make to repay the loan in 25 years?

  1. $8,349
  2. $5,982
  3. $9,368
  4. $7,493

Answer(s): C

Explanation:

If P is the annual payment, then using the annuity formula,
100,000 = P/0.08*[1 - 1/1.08^25] = 10.67P
This gives P = $9,368



What are half of the observations always greater than?

  1. Median
  2. Geometric mean
  3. None of these answers
  4. Mode
  5. Mean

Answer(s): A

Explanation:

By definition, the median is the middle point. It divides the observations into two. The mean is NOT the answer because it may be affected by extreme values.






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