The Summary function is not flexible enough for users to be able to calculate various statistics (for e.g. Mode) using the group-by method, making it a pain in the neck to use. Other software packages like R and Python can easily allow the function to be performed on group-by data.
![eemei_0-1583143369683.png eemei_0-1583143369683.png](https://community.jmp.com/t5/image/serverpage/image-id/22050i25A7FE4F2285FBE4/image-size/medium?v=v2&px=400)