"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."
Tell me about a side project you worked on - what motivated the choice, what skills you learned, the overall outcome.
Shared a github repo, showed the final web app end product, discussed the outcomes of the analysis and presentation.