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Kurtosis

What is Kurtosis?

Kurtosis measures the relative likelihood of observations to the right and the left of the mean. The normal distribution has a kurtosis of zero.

$$Kurtosis=\frac{E[(x-\mu)^4]}{E[(x-u)^2]^2}$$

$$Kurtosis\; Greater\; Than\; Normal\;$$

A graph demonstrating kurtosis greater than normal.

$$Kurtosis\; Less\; Than\; Normal\;$$

A graph demonstrating kurtosis less than normal.