Hi, thought I would ask for some pointers. I have a question, I have a grouped data set with 7 columns, and in one column of data there is a variable that returns differing values, and I need to find the 5 most common product numbers in that column. I need to split of all seven columns just with those 5 most common product numbers, but the other columns would be in there, just the rows containing non-most common would not be in there.
I then need to get the data organized so that just observations from that set are used.
Thanks in advance.