Ungrouped vs Grouped Data

So today Max taught us about the wonderfulness data groups.

Grouped Data- frequency --- table
Boundaries Class Marks frequencies


so i am not exactly sure what it all means but i do know how to do it on the calculator so thats a good thing!!

Just do it the same way ( on the calculator) but you have two tables and then put L1,L2 and the handy dandy tool does it all for ya..

To clear the lists just press 2nd + 4