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#' @rdname weighted_sd
#' @export
weighted_se <- function(x, weights = NULL) {
UseMethod("weighted_se")
}
#' @export
weighted_se.data.frame <- function(x, weights = NULL) {
se_result <- purrr::map_dbl(x, ~ weighted_se_helper(.x, weights = weights))
names(se_result) <- colnames(x)
se_result
}
#' @export
weighted_se.matrix <- function(x, weights = NULL) {
se_result <- purrr::map_dbl(x, ~ weighted_se_helper(.x, weights = weights))
names(se_result) <- colnames(x)
se_result
}
#' @export
weighted_se.default <- function(x, weights = NULL) {
weighted_se_helper(x, weights)
}
weighted_se_helper <- function(x, weights) {
if (is.null(weights)) weights <- rep(1, length(x))
sqrt(weighted_variance(x, weights) / length(stats::na.omit(x)))
}
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