打卡战拖Take Home Challenges & Review Basics

5月中到6月中没有辜负自己，按计划刷完了DataCamp的career track～觉得是实践的时候了，然而直接刷Kaggle还是有点菜鸡，所以先刷take home data challenges CYA。再使用遗忘曲线好好复习一下DataCamp的课件。加油啦！

06/23 Product Question - How to Increase X of Site Y
逻辑上
Metrics --> Variables --> Model --> Potential Outcome --> Next steps

06/24 A/B Testing
几个陷阱
1. 是否samples are independent
2. 是否有novelty effect

复习了T-test