Bar Graph and Output to Table Help


I just need some help making sure my bar graphs are doing what they are suppose to be doing.
So I have one bar graph graphing an aggregate of student’s favorite elective class (Slide 4), then I have a side by side bar graph graphing elective classes based on student’s favorite core class and a segmented bar graph of the same data (Slide 8). I can’t quite figure out of to get the segmented bar graph to take a numberlist. I’ve tried using length() in the calculator but it’s not working. I also need help figuring out how to export the frequency of a selected option to display in a table.

Can someone help me through this?