Computes running weighted variance of a vector, returning the values from each step.
running_weighted_var(x, w, method = c("moment", "unbiased"), na.rm = FALSE)A vector containing the recursive weighted variance estimates.
A numeric vector or object that can be coerced to such.
A numeric vector of non-negative weights. Will be automatically normalised to sum to one.
Estimator type, either "moment" (default) or
"unbiased", which is unbiased only in case of frequency weights.
If TRUE, NA values in x (and corresponding weights in w) are
omitted from the computation. Default is FALSE.