For Any Frequency Distribution The Kurtosis Is. Within Kurtosis a distribution could be platykurtic leptokurtic or mesokurtic as shown below. It tells us the extent to which the distribution is more or less outlier-prone heavier or light-tailed than the normal distribution.
A distribution with a positive kurtosis value indicates that the distribution has heavier tails than the normal distribution. For kurtosis the general guideline is that if the number is greater than 1 the distribution is too peaked. The degree of tailedness of a distribution is measured by kurtosis.
An excess kurtosis of 1 or more is considered high.
Probability and StatisticsM1 topic - Line. An increased kurtosis 3 can be visualized as a thin bell with a high peak whereas a decreased kurtosis corresponds to a broadening of the peak and thickening of the tails. The kurtosis for a standard normal distribution is three. Mboxkurtosis fracsum_i1NY_i - barY4N s4 - 3 This definition is used so that the standard normal distribution has a kurtosis of zero.
