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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.

This exercise is part of the course

Introduction to Writing Functions in R

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Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

# Add an na.rm arg with a default, and pass it to mean()
calc_harmonic_mean <- function(x) {
  x %>%
    get_reciprocal() %>%
    mean() %>%
    get_reciprocal()
}
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