Lots of coding but not really having good grades, open book quiz and exam is about memorising code, not very applicable in real life : (

If it's an elective subject, don't choose it. The First Lesson Is Very Simple, But The Formulas Are Much Longer. When You Go To Matrix, You Can'T Listen To β = (X^TX)^{-1}X^TY\). Mid-Term Is Difficult To Colour, And The Question Is Long To The Line. It's Really Hard. After That, Teach AIC, B IC really doesn't know at all. Today's exam True or False Question needs to be scored first. Is it sick? Obviously, I didn't use it before, but I still have to explain it for a long time. Count and write a fixed article? I'm so good after the exam, so I decided to write and vent.