agricolae (version 1.0-4)

kurtosis: Finding the Kurtosis coefficient

Description

It obtains the value of the kurtosis for a normally distributed variable. The result is similar to SAS.

Usage

kurtosis(x)

Arguments

x

a numeric vector

Value

• x
  The kurtosis of x

Details

n = length(x) $n(n+1){(n-1)(n-2)(n-3)}\sum_{i}\left(x_i - mean(x){sd(x)}\right)^4 - 3(n-1)^2{(n-2)(n-3)}$

See Also

skewness

Examples

library(agricolae)
x<-c(3,4,5,2,3,4,5,6,4,NA,7)
kurtosis(x)
# value is -0.1517996