If $25\%$ of the items are less than $20$ and $25\%$ are more than $40$,the quartile deviation is

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

The section-wise expenditure of a State Government is shown in the given pie chart. The expenditure incurred on transport is.....$\%$

The quartile deviation of daily wages (in $Rs.$) of $7$ persons given below $12, 7, 15, 10, 17, 19, 25$ is

For a moderately skewed distribution,quartile deviation and the standard deviation are related by

The measure of dispersion is