Calcula curtose excessiva. Metodos: fisher (default, bias-corrected),
pearson (sem correcao), winkler (correcao de Winker).
Usage
rnp_kurtosis(x, method = c("fisher", "pearson", "winkler"), na.rm = TRUE)Examples
rnp_kurtosis(rnorm(1000))
#> [1] -0.003408659