Distance Learning Course in Hydrology: Basic Hydrologic Sciences for the Asian Region (2017)

Sir Greetings!

In the following fig for the second data skewness is given as 0.9

But i am unable to arrive 0.9 sir.

3(mean-median)/sd

3(28-20)/21

=1.142 am i correct sir.pl help me to solve it sir.

i have attached the file.

with warm regards

Leela.G