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BITSAT 2010
Exam
BITSAT
Year
2010
Subject
Mathematics
Chapter
Probability

BITSAT 2010 · Mathematics · Probability

If the mean, mode and S.D. of a frequency distribution are 41, 45...

If the mean, mode and S.D. of a frequency distribution are 41, 45 and 8 respectively, then its Pearson's coefficient of skewness is

Options

  1. A(13\frac{1}{3})
  2. B(−12\frac{-1}{2})
  3. C(23\frac{2}{3})
  4. D1

Correct answer

B. (−12\frac{-1}{2})

Step-by-step solution

(-12\frac{1}{2}, We have (SK= Mean − Mode S.D. \mathrm{S}_{\mathrm{K}}=\frac{\text{ Mean }- \text{ Mode }}{\mathrm{S} . \mathrm{D} \text{. }} (41−458=−12\frac{41-45}{8}=-\frac{1}{2}
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