Central Tendency & DispersionMTP June 22Question 3254 of 473

The Quartile deviation is

Options

A

\displaystyle \frac{2}{3}

of SD

B

\displaystyle \frac{4}{5}

of SD

C

\displaystyle \frac{5}{6}

of SD

DNone of these

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Correct Answer

✅ Option a — $\displaystyle \frac{2}{3}$ of SD

All Options:

A $\displaystyle \frac{2}{3}$ of SD
B $\displaystyle \frac{4}{5}$ of SD
C $\displaystyle \frac{5}{6}$ of SD
DNone of these

Detailed Solution & Explanation

For a normal distribution, the relationship between the Quartile Deviation (Q.D.) and the Standard Deviation (S.D.) is given by:

\text{Q.D.} \approx \frac{2}{3}\text{S.D.}

Hence, **Option A** is the correct answer.

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