Compute z-scores

zscore(x, na.rm = getOption("na.rm", FALSE))

Arguments

x: a numeric vector
na.rm: a logical indicating whether missing values should be removed

Examples

data(penguins, package = "palmerpenguins")
penguins |> 
  group_by(species) |> 
  mutate(zbill_length_mm = zscore(bill_length_mm, na.rm = TRUE)) |> 
  head()
#> # A tibble: 6 × 9
#> # Groups:   species [1]
#>   species island    bill_length_mm bill_depth_mm flipper_length_mm body_mass_g
#>   <fct>   <fct>              <dbl>         <dbl>             <int>       <int>
#> 1 Adelie  Torgersen           39.1          18.7               181        3750
#> 2 Adelie  Torgersen           39.5          17.4               186        3800
#> 3 Adelie  Torgersen           40.3          18                 195        3250
#> 4 Adelie  Torgersen           NA            NA                  NA          NA
#> 5 Adelie  Torgersen           36.7          19.3               193        3450
#> 6 Adelie  Torgersen           39.3          20.6               190        3650
#> # ℹ 3 more variables: sex <fct>, year <int>, zbill_length_mm <dbl>