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

Just use the "aggregate" function

aggregate(x = df[c("Age","Wages","Education.University","Productivity")], by = df[c("Company")], FUN = mean)

#  Company      Age    Wages Education.University Productivity
#1       A 27.00000 56666.67            0.6666667     102.6667
#2       B 28.66667 68333.33            1.0000000     111.6667
#3       C 29.00000 53333.33            0.3333333     101.6667