Hi, I would like to add new rows (observations) at the end of my dataset that would be the sum of other rows. Please note that I'm using aggregate data (not record-level). Here's what my data looks like: REGION YEAR GENDER TOTAL 1 2017 M 10 2 2017 M 5 3 2017 M 3 1 2017 F 11 2 2017 F 4 3 2017 F 7 1 2018 M 10 2 2018 M 8 3 2018 M 6 1 2018 F 9 2 2018 F 7 3 2018 F 11 What I want is a row at the end combining all the regions together (by sex and year) with the TOTAL sum. Something like this: REGION YEAR GENDER TOTAL ALL 2017 M 18 ALL 2017 F 22 ALL 2018 M 24 ALL 2018 F 27 Thank you!
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