First slide

Introduction to statistics

Question

If the MD is 12, the value of SD will be

Moderate

A

15
B

12
C

24
D

None of these

Solution

$\begin{array}{l} We know that QD = \frac{5}{6} \times MD = \frac{5}{6} \times 12 = 10 \\ ∴ SD = \frac{3}{2} \times QD = \frac{3}{2} \times 10 \Rightarrow SD = 15 \end{array}$

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