I want to create a new row for each student with the sum of sums and the average of the mean. My data looks like this: (there are more students, not just these two) Student DomainNumChar Sum Mean 1 1 17.0000000 0.5666667 1 2 24.0000000 0.6857143 1 3 25.0000000 0.8333333 1 4 24.0000000 0.8000000 1 5 13.0000000 0.5200000 10 1 25.0000000 0.8333333 10 2 22.0000000 0.6285714 10 3 23.0000000 0.7666667 10 4 20.0000000 0.6666667 10 5 13.0000000 0.5200000 and I need it to look like this: Student DomainNumChar Sum Mean 1 1 17.0000000 0.5666667 1 2 24.0000000 0.6857143 1 3 25.0000000 0.8333333 1 4 24.0000000 0.8000000 1 5 13.0000000 0.5200000 1 . 103.000000 .68114286 10 1 25.0000000 0.8333333 10 2 22.0000000 0.6285714 10 3 23.0000000 0.7666667 10 4 20.0000000 0.6666667 10 5 13.0000000 0.5200000 10 . 103.000000 .68304762 How would I make that happen? Thanks
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