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Q.

The coefficient of quartile deviation is calculated by the formula

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a

$\frac{Q_{1} + Q_{2}}{4}$

b

$\frac{Q_{3} + Q_{1}}{4}$

c

$\frac{Q_{3} - Q_{1}}{Q_{3} + Q_{1}}$

d

$\frac{Q_{2} + Q_{1}}{Q_{2} - Q_{1}}$

answer is C.

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Detailed Solution

The correct answer is 3.

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The coefficient of quartile deviation is calculated by the formula