I passed the 8th exam with 90 points. Although I feel I'm writing this review late, I decided to write it anyway for those who aren't aware. While preparing for the practical test, I found out about '퇴근후딴짓'님's lecture. I had intended to study for the certificate without spending extra money, but I chose the lecture to save time. My original job involves development using Python, but analysis is quite different 😊😊. Thanks to the lecture, it was a time to learn a lot about how to use pandas and sklearn methods. And regarding practical test problem number 2 in the final section, it was good that I could use many methods that I had learned, which can be commonly applied. Thank you.