I have the data similar to the following in a data frame: LastName Department Salary 1 Johnson IT 56000 2 James HR 54223 3 Howe Finance 80000 4 Jones Finance 82000 5 Norwood IT 67000 6 Benson Sales 76000 7 Smith Sales 65778 8 Baker HR 56778 9 Dempsey HR 78999 10 Nolan Sales 45667 11 Garth Finance 89777 12 Jameson IT 56786
I want to calculate both the mean salary broken down by Department and also the
total amount paid out per department i.e. I want both sum(Salary) and
mean(Salary) for each Department. Right now, I am using aggregate.data.frame
twice, creating two data frames, and then combining them using data.frame.
However, this seems to be very memory and processor intensive and is taking a
very long time on my data set. Is there a quicker way to do this?
Thanks in advance, Siv Raman
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