In my dataset, I'm looking for multiple entries of values in a column. I first grouped my dataset by the column, let's call it column X. I now want to get rid of all the groups in column X that consist of only 1 entry
X Y Z
1 A B
1 A C
1 G I
2 R D
3 A E
3 A O
To
X Y Z
1 A B
1 A C
1 G I
3 A E
3 A O