Kurtosis Graph. Three different types of curves courtesy of investopedia are shown as follows. It tells us the extent to which the distribution is more or less outlier prone heavier or light tailed than the normal distribution.
A normal distribution has kurtosis exactly 3 excess kurtosis exactly 0. Skewness and kurtosis skewness. A distribution with negative excess kurtosis is called platykurtic or platykurtotic platy means broad.
Skewness and kurtosis skewness.
In token of this often the excess kurtosis is presented. Open a blank excel document. For the nomenclature just follow the direction of the tail for the left graph since the tail is to the left it is left skewed negatively skewed and the right graph has the tail to the right so it is right skewed positively skewed. Kurtosis is a statistical measure that defines how heavily the tails of a distribution differ from the tails of a normal distribution.
