Question

the coefficient of quartile deviation of a series is 0.25 and its upper quartile is 63 find the lower quartile and quartile deviation​

Answer 1

$\boxed{SOLUTION:}$

Quartile deviation is the half of the inter quartile deviation.

Inter quartile deviation is the difference between upper quartile and lower quartile.

Given that, lower quartile is 0.25 and upper quartile is 63

Therefore, Quartile deivation is9

$= \frac{upper \: quartile - lower \: quartile \: } {2} \\ = quartil \: deviation = \frac{63 - 0.25}{2} \\ = \frac{62.75}{2} \\ = 31.375$

$\boxed{ANSWER=31.375}$