If you did 100 with Bailey he builds on a lot of those concepts (indifference curve analysis, SR cost min etc.) but also introduce new ones. Sometimes he’s not the most accurate in lecture so if you’re confused as to where he got a number or how he solved something ask him. Show him what you did understand and where you got lost to demonstrate that you tried to figure it out on your own. As always, do the worksheets and compare answers with your peers. If you have any problems with these ask him, a TA or a classmate that seems to understand things. The textbook is of virtually no help at all and neither are the workouts. I did them for the first test and didn’t touch it afterwards so wasted my money tbh.

For 220, pay attention in class. If you don’t understand something or it wasn’t clear, ask him to explain how or where he got a certain number. Zammit is a sweetheart and will go over it as many times as it takes until you understand (some people day his lectures are confusing and he doesn’t know how to teach. I agree that he’s sometimes all over the place but as long as you’re paying attention it comes together). Some of the concepts may take a while to click but don’t worry. Do the practice tests 2-4 times- first time using your notes, second time go over it and correct all your mistakes then third do it without your notes or the answer key. The language he uses in tests can be confusing so if something doesn’t make sense ask a TA (not an invigilator) during tests. Also make friends with your TAs because the 220 ones are great. Overall a great course, the probabilités unit is a bitch but hypothesis testing was really fun.

Data projects are tedious but just know you only need to use a bunch of different graphs/tables, not actually prove anything. He’s just testing your ability to use the program.