well, data management is definitely the easiest out of all the gr. 12 maths...
when i was in highschool (2yrs), advanced functions and calculus were combined... so in my mind, they are one in the same....
but now they've split the course into advanced functions and calculus....
i didnt find it too bad (86% i believe)... but i had great teacher and enjoyed it....
if you know you're weak in math, i would steer clear of it... just so you can guarentee yourself a better mark to get into the mac program!
you won't be using any advanced functions in the program, and data management will help you will stats in second year.