Pie Chart from MC Aggregate

Questions
2

List l is controlling the breakdown of the pie chart, so in your graph CL aggregate your student choices:

numberList("L"): aggregate(when MC1.isSelected(1) 1
                           when MC1.isSelected(2) 2
                           when MC1.isSelected(3) 3
                           when MC1.isSelected(4) 4
                           otherwise 0)

Then, I made P(x) to calculate the percentage of list L that contains a number, x. Then, make the list l = [P(1), P(2), P(3)...] with however many choices you have. Here:
Pie Chart (Fixed the issue mentioned below)