Wow.. When I was studying on my own for the first time in the Big Quarter practical exam, there were a lot of things I didn't understand, so I ended up failing. Then I found out about the After-Work Others lecture, so I took it. I didn't have much time because I was studying while working, but I was able to pass on the second try thanks to the recommended coding and various tips! Data analysis is a difficult field, but if you only take the exam, there's no lecture better than this one. Thanks to you, I passed smoothly with a score of 90, so I'm so happy! I'll have to study data more in the future, using Kaggle, etc.