Dealing with missing values
In the last exercise, many sectors had an NA value for the harmonic mean. It would be useful for your function to be able to remove missing values before calculating.
Rather than writing your own code for this, you can outsource this functionality to mean().
The dplyr package is loaded.
Den här övningen är en del av kursen
Introduction to Writing Functions in R
Interaktiv övning med praktiskt arbete
Testa den här övningen genom att slutföra den här exempelkoden.
# Add an na.rm arg with a default, and pass it to mean()
calc_harmonic_mean <- function(x) {
x %>%
get_reciprocal() %>%
mean() %>%
get_reciprocal()
}