First interview 30 minutes. Then Homework assignment. Second Interview 15 minutes. Then Interview with Data Scientists. I worked for two weeks on the homework assignment of 3 questions. The first two questions are plotting the distributions and doing t-tests. The third question has a vague question that is difficult to understand. Apparently it is burning other data scientists on the interviews. The question is about retargeting. After I split the data set into retargeted and not retargeted, and looked at the retargeted portion who actually converted, the dataset became highly (99.9 -0.01) unbalanced. I couldn't do anything with it except anomaly detection. After I submitted it, I did not hear back from them for a week or so, and I thought I was ghosted. But I wasn't. The manager seems to be nice, but I will not be doing homework assignments again.