Kurtosis
Computes the kurtosis.
kurtosis(x)
x |
a numeric vector containing the values whose kurtosis is to be computed. NA values are removed in the computation. |
If N = length(x), then the kurtosis of x is defined as:
N sum_i (x_i-mean(x))^4 (sum_i (x_i-mean(x))^2)^(-2) - 3
N sum_i (x_i-mean(x))^4 (sum_i (x_i-mean(x))^2)^(-2) - 3
The kurtosis of x
.
G. Snedecor, W. Cochran. Statistical Methods, Wiley-Blackwell, 1989
x <- rnorm(100) kurtosis(x)
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