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BITSAT 2014
Exam
BITSAT
Year
2014
Subject
Mathematics
Chapter
Statistics

BITSAT 2014 · Mathematics · Statistics

IfM. D. is 12, the value of S.D. will be

IfM. D. is 12, the value of S.D. will be

Options

  1. A15
  2. B12
  3. C24
  4. DNone of these

Correct answer

A. 15

Step-by-step solution

We know that Q.D =56×M⋅D.=56×12=10∴S.D=32×Q⋅D.=32×10⇒S.D.=15=\frac{5}{6} \times M \cdot D.=\frac{5}{6} \times 12=10\therefore \mathrm{S}. \mathrm{D}=\frac{3}{2} \times Q \cdot D.=\frac{3}{2} \times 10 \Rightarrow S. D.=15
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