"Every business collects data, and it's the job of the data scientist to analyze, interpret, and communicate that information in a way that will help drive company decisions. In an interview, expect to answer technical questions about your ability to perform quantitative tests as well as create clear visualizations of large, complex data sets. Come ready to discuss past projects you've worked on and how you communicate data findings clearly and concisely in order to help solve business-related problems."
How would you correlate each device a person visits the website with back to that person?
Right answer: logistic regression. check if they logged in. Wrong answers: SVMs, anything temporal, dimensional reduction, linear regression, finding out more about the dataset/industry to help with modeling the data in anyway.