电面：group video call\n\nSQL部分Q1: How many users started a call with more than 3 different people in the last 7 days?\n以下内容需要积分高于 180 您已经可以浏览\n\nQ2: What % of daily active users from France were on a video call yesterday?\n产品部分：\n如何用这些数据去判断用户是不是感兴趣：Cluster用户得到number，75pp 90pp选择limit，认为它是right skewed\n反问那不是right skewed，它是left skewed，怎么选？仍然选择，但是还继续找engineer咨询cost\nSuccess metrics：提到了time spent，追问为什么不行。提到了retention rate，怎么计算，回答是整体用\n设计实验，novelty effect\n还有什么需要注意的？我提到了network effect。先是追问怎么操作，再问control group会怎么样，整体effect会怎么样，又问了如果treatment group的打电话给了control group，怎么办，回答在后续分析的时候做计算尽量避免。\n.--\n电面后第二天通知vo，vo约在了三周后，分三天进行。. 1point3acres\nbq：self-intro，how to work with different people，how you make breakthrough，constructive feedback，how to build relationship\nsql：dating app profile reporting\nAR：ins shopping tab\ndata to find the signal, only consider organic posts and search\nhow to estimate potential revenue\nmetrics\nbusiness consideration: ads\nhow to do experiment\nbuild a comprehensive dashboard, primary metrics, secondary metrics\nif engaged a lot but purchase rate is low, how to diagnose\n\nAE：comments distribution\nwhat's the distribution of comments/ active user per day\n画图\nplot mean median pt95，what's CLT\nsampling 200 times, what's the sample size? why the mean is normal distribution?\n计算mean，pt95: need to show the formula\nhow will the plot change is the sample size change?\nsee comment/user increased，why\n\nvo结束后第三工作日邮件通知被拒，后来跟recruiter通电话了解到挂在了AE，面试官call out我的统计知识只知皮毛不能深入