If Q.D is 16 the most likely value of S.D will be

Answers (1)

As learnt in

QUARTILES, OCTILES, DECILES, PERCENTILES -

Measure

formulae  Where    

Qr?????? 

= l+\frac{h}{f}\left ( \frac{rN}{4} -C\right )     

Qr = \frac{rN}{4}

 Or

= l+\frac{h}{f}\left ( \frac{rN}{8} -C\right )

O\frac{rN}{8}

Dr 

\dpi{80} = l+\frac{h}{f}\left ( \frac{rN}{10} -C\right )

Dr = \frac{rN}{10}

Pr 

= l+\frac{h}{f}\left ( \frac{rN}{100} -C\right )

Pr = \frac{rN}{100}

 

 - wherein

 We know that, S.D =  \frac{3}{2}QD

                                =\frac{3}{2} \times 16

                                =24

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