kurtosis {agricolae} | R Documentation |
It obtains the value of the kurtosis for a normally distributed variable. The result is similar to SAS.
kurtosis(x)
x |
a numeric vector |
n = length(x)
$frac{n(n+1)}{(n-1)(n-2)(n-3)}sum_{i}(frac{x_i - mean(x)}{sd(x)})^4 - frac{3(n-1)^2}{(n-2)(n-3)}$
x |
The kurtosis of x |
library(agricolae) x<-c(3,4,5,2,3,4,5,6,4,NA,7) kurtosis(x) # value is -0.1517996