Jarque-Bera Test

Definition

$JB=\frac{n}{6}\left(S^2+\frac{1}{4}(K-3{)}^2\right)\sim {\chi }^2(2)$ where $n$ is the number of observations, $S$ is sample skewness, $K$ is the sample kurtosis

Test uses skewness and Kurtosis to test normality of the data