How to aggregate data in data.frame in R

Question

I have a large data.frame. The data.frame include a lot of values.

For example:

df <- data.frame(Company = c(\'A\', \'A\', \'B\', \'C\', \'A\', \'         


        

Answer 1

You can easily do it by using dplyr library.

library(dplyr)
df %>% group_by(Company) %>% summarise(Age = mean(Age), Wages = mean(Wages), Education.University = sum(Education.University), Productivity = mean(Productivity))