Kurtosis Formula Example. Just change the exponent 3 to 4 in the formulas. S 2 sample variance.
The moment coefficient of kurtosis of a data set is computed almost the same way as the coefficient of skewness. 26 12 16 56 112 24. X kurtosis 0 2320107 formula 2 stata.
Kurtp r excess kurtosis of the distribution for the population in range r1.
For a very large sample very high n the differences between and among n 1 n n 1 n 2 and n 3 are becoming negligible and the sample kurtosis formula approximately equals. In terms of shape a platykurtic distribution has thinner tails examples of platykurtic distributions include the continuous and discrete uniform distributions and the raised cosine distribution the most platykurtic distribution of all is the bernoulli distribution with p 1 2 for. Proc means data test kurtosis vardef n. Second moment 26 41 2 12 41 2 16 41 2 56 41 2 112 41 2 24 41 2 6.
