1.11 Summarizing data

The dplyr::summarize function can be used to reduce multiple values down to a single value (such as a mean).

library(dplyr)
# calculate mean height and mass
newdata <- summarize(starwars, 
                     mean_ht = mean(height, na.rm=TRUE), 
                     mean_mass = mean(mass, na.rm=TRUE))
newdata

## # A tibble: 1 × 2
##   mean_ht mean_mass
##     <dbl>     <dbl>
## 1    175.      97.3