0
$\begingroup$

I know you can use $\sigma^3$ and $\sigma^4$ with $\mu$3 and $\mu$4 respectively to find the skewness and the kurtosis, but by themselves what do they mean + what's the formula to find them?

Thank you in advance!

$\endgroup$
1
$\begingroup$

skewness=$\frac{\mu_3}{\sigma^3}$, kurtosis=$\frac{\mu_4}{\sigma^4}$, where $\mu_k=E((X-\mu)^k)$ and $\sigma^2=E((X-\mu)^2)=E(X^2)-\mu^2$

Using Google:

https://brownmath.com/stat/shape.htm

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.