# Difference between skewness formulas

I recently started learning statistics. I got problem while learning skewness & kurtosis concept i.e in my search for formulas regarding skewness & kurtosis it is showing two different formulas and don't understand when to use which.

And the same problem for kurtosis is also having when to use lengthy formula and when to use small.

Can any one please give me clarification?

• Check out Joanes, D. N., & Gill, C. A. (1998). Comparing measures of sample skewness and kurtosis. The statistician, 183-189. – Anthony Jun 13 '15 at 18:37