Let X∼Binomial(n,p)X \sim \text{Binomial}(n, p)X∼Binomial(n,p). What is the skewness γ1\gamma_1γ1?
1−2pnp(1−p)\frac{1-2p}{\sqrt{np(1-p)}}np(1−p)1−2p
np(1−p)1−2p\frac{np(1-p)}{1-2p}1−2pnp(1−p)
np(1−p)\sqrt{np(1-p)}np(1−p)
1−2p1-2p1−2p