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#' Compute z-scores
#'
#' Compute z-scores
#' @param x a numeric vector
#' @param na.rm a logical indicating whether missing values should be removed
#' @export
#' @examples
#' data(penguins, package = "palmerpenguins")
#' penguins |>
#' group_by(species) |>
#' mutate(zbill_length_mm = zscore(bill_length_mm, na.rm = TRUE)) |>
#' head()
zscore <- function( x, na.rm=getOption("na.rm", FALSE) ) {
( x - mean(x, na.rm=na.rm)) / sd(x, na.rm=na.rm)
}
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