Definition:Kurtosis/Notation

Definition

Let $X$ be a random variable with mean $\mu$ and standard deviation $\sigma$.

The kurtosis of $X$ is usually denoted $\alpha_4$.

Some sources denote the kurtosis by the symbol $\Beta_2$ or $\beta_2$.

Sources

• Weisstein, Eric W. "Kurtosis." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Kurtosis.html