Computes the population weighted excess kurtosis:
sum(w_hat * ((x - mu) / sigma)^4) - 3.
Usage
weighted_kurtosis(x, w, na.rm = FALSE)
Arguments
- x
A numeric vector of observations.
- w
A numeric vector of non-negative weights (need not sum to 1).
- na.rm
Logical. If TRUE, paired NAs in x and w are removed
before computation. If FALSE (default) and any NA is present,
NA is returned.
Value
A single numeric value.