Pearsonian measure of skewness -

Ans. is b' i.e., Mean-Mode Measures of Skewness o There are following measures of skewness 1. Karl pearson's measure The formula for measuring skewness is divided into a) absolute measure Skewness = Mean - Mode b) relative measure The relative measure is known as the Coefficient of Skewness and is more frequently used than the absolute measure of skewness. Fuher, when a comparison between two or more distributions is involved, it is the relative measure of Skewness which is used.